Perhaps you should try some spelling variations:
sach thu » sach thue, sach thieu, sach tham
thu hanh » thuc hanh, thu thanh, thuy hanh
hanh lam » thanh lap, hanh kem, hanh va
te sach » toc sach
hanh xa » hanh va, hanh ma, hanh xu
hieu ve » hieu va, hieu van
xuc van » duc van, luc van, vuc van
ve cam » ve cham, ve cac, va cam
lam va » nam va, dam va, lam ha
thiet » thieu

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