Perhaps you should try some spelling variations:
nha triet » khac triet, cua triet
va triet » va thiet, va trien, ve triet
sach thu » sach thue, sach thieu, sach tham
thu hanh » thuc hanh, thu thanh, thuy hanh
hanh lam » thanh lap, hanh kem, hanh va
su sach » so sach, vu sach
hieu ve » hieu va, hieu van
hanh xa » hanh va, hanh ma, hanh xu
tuc va » thuc va, truc va, tuc xa
xac va » tac va, ac va, bac 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: su sach thu hanh xa hoi. hieu ve cam ((xac va) or (tuc va)) hanh lam ((nha triet) or (va triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach thu hanh xa hoi. hieu ve cam ((xac va) OR (tuc va)) hanh lam ((nha triet) OR (va triet)).
• Adding a wildcard symbol may retrieve word variants: su sach thu hanh xa hoi. hieu ve cam ((xac va) or (tuc va)) hanh lam ((nha triet) or (va triet))*.