Perhaps you should try some spelling variations:
thanh vi » thanh va, thanh ve, nhanh vi
hieu van » thien van, lieu va, hieu ve
te sach » toc sach
cam luc » cam xuc, cau luc
luc van » luoc van, luu van, duc van
cua tre » cua te, cuu tre, cua triet
sach tu » sach thu, cach tu, sach ty
hieu va » lieu va, hieu qua
nang xa » nang x, lang xa, nang ma
tu nang » tru nang, tu nong, tu nano

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach tu nang xa hoi. ((hieu van) OR (hieu va)) cam luc van ((thanh vi) or (hanh vi)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach tu nang xa hoi. ((hieu van) OR (hieu va)) cam luc van ((thanh vi) OR (hanh vi)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach tu nang xa hoi. ((hieu van) OR (hieu va)) cam luc van ((thanh vi) or (hanh vi)) cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach tu nang xa hoi. ((hieu van) OR (hieu va)) cam luc van ((thanh vi) or (hanh vi)) cua tre*.