Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
sach ly » sach y, sach ty, sach hay
sach lo » sach dao, sach doi, sach hoi
nang xa » nang x, lang xa, nang ma
nam tuc » nam thuc, nam truc, nam tu
xa hanh » xa thanh, xa khanh, da hanh
va hanh » van hanh, va thanh, va danh
vi cua » vai cua, di cua
cua su » qua su

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sach ly) or (sach lo)) nang xa hoi. hieu van nam tuc ((xa hanh) or (va hanh)) vi cua su~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ly) OR (sach lo)) nang xa hoi. hieu van nam tuc ((xa hanh) OR (va hanh)) vi cua su.
• Adding a wildcard symbol may retrieve word variants: tu ((sach ly) or (sach lo)) nang xa hoi. hieu van nam tuc ((xa hanh) or (va hanh)) vi cua su*.