Perhaps you should try some spelling variations:
su triet » su viet, su tien
thanh va » thanh van, hanh va, thanh ha
ve triet » va trien
hanh lam » thanh lap, hanh kem, hanh va
sach thi » sach thu, sach tai, sach thieu
va hanh » van hanh, va thanh, va danh
truc va » thuc va, thuc vat, trung va
su sach » so sach, vu sach
ve cam » ve cham, ve cac, ve cai
va hoi » xa hoi, va hoc, va hoa
va cam » va cham, va cac, va cao

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 thi thanh va hoi. hieu ((ve cam) or (va cam)) truc va hanh lam ((ve triet) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach thi thanh va hoi. hieu ((ve cam) OR (va cam)) truc va hanh lam ((ve triet) OR (su triet)).
• Adding a wildcard symbol may retrieve word variants: su sach thi thanh va hoi. hieu ((ve cam) or (va cam)) truc va hanh lam ((ve triet) or (su triet))*.