Perhaps you should try some spelling variations:
sach thi » sach thu, sach tai, sach thieu
thi hanh » thi thanh
hanh xa » hanh va, hanh ma, hanh xu
va hanh » van hanh, va thanh, va danh
dam van » dao van, nam van, pham van
su sach » so sach, vu sach
ve cam » ve cham, ve cac, va cam
tuc va » thuc va, truc va, tuc xa
lam va » nam va, dam va, lam ha

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