Perhaps you should try some spelling variations:
sach thu » sach thue, sach thieu, sach tham
thu nang » thi nang, thu hang, thu bang
hanh lai » hanh lam, hanh tai, thanh lap
te sach » toc sach
cua tre » cua te, cua triet, dua tren
cuu tre » cau tren, cau treo
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
luc va » duc va, tuc va, loc va
xuc va » duc va, tuc va, xac va
ve cam » ve cham, ve cac, va cam

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 thu nang xa hoi. hieu ve cam ((xuc va) or (luc va)) hanh lai ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach thu nang xa hoi. hieu ve cam ((xuc va) OR (luc va)) hanh lai ((cua tre) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: te sach thu nang xa hoi. hieu ve cam ((xuc va) or (luc va)) hanh lai ((cua tre) or (cuu tre))*.