Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
phap thuc » phap thu, phap hoc, phap tu
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
ve phap » va phap, de phap, ve phan
thuc xa » thuc xay, tuc xa, thuc va
xa hanh » xa thanh, xa khanh, va hanh
vi cua » vai cua
di cua » dai cua, doi cua, de cua

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((vu bach) or (thuoc sach)) ky nang xa hoi. hieu ve phap thuc xa hanh ((vi cua) or (di cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu bach) OR (thuoc sach)) ky nang xa hoi. hieu ve phap thuc xa hanh ((vi cua) OR (di cua)) tre.
• Adding a wildcard symbol may retrieve word variants: ((vu bach) or (thuoc sach)) ky nang xa hoi. hieu ve phap thuc xa hanh ((vi cua) or (di cua)) tre*.