Block partitioning methods play a critical role in hybrid video coding standards such as HEVC and VVC. A quaternary tree (QT) / binary tree (BT) / ternary tree (TT) partitioning structure has been adopted in VVC, which improves the coding performance significantly compared to HEVC. In this paper, we explore two advanced block partitioning methods beyond VVC. Different from block symmetric partitioning methods such as QT and BT, the two proposed advanced partitioning methods are unsymmetric, named unsymmetric quaternary tree (UQT) and unsymmetric binary tree (UBT). UQT and UBT split a block into four and two partitions unsymmetrically, respectively. Several modifications are proposed to make coding tools compatible with a block holding a width or a height not in a form of 2n. Besides, fast algorithms are presented to accelerate the encoder. Experimental results show that the proposed method provides an average BD-rate saving about 1.5% with a negligible decoding time change, compared with VVC in random access configurations under the JVET common test conditions.