Perhaps you should try some spelling variations:
va triet » va thiet, va trien, ve triet
hanh lam » thanh lap, hanh kem, hanh va
va hanh » van hanh, va thanh, va danh
ve cham » va cham, ve chat, vu cham
su sach » so sach, vu sach
ve cam » ve cac, va cam, ve cai
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) OR (thi thanh)) xa hoi. hieu ((ve cam) or (ve cham)) tuc va hanh lam va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((thi hanh) OR (thi thanh)) xa hoi. hieu ((ve cam) OR (ve cham)) tuc va hanh lam va triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((thi hanh) OR (thi thanh)) xa hoi. hieu ((ve cam) or (ve cham)) tuc va hanh lam va triet".
• Adding a wildcard symbol may retrieve word variants: su sach ((thi hanh) OR (thi thanh)) xa hoi. hieu ((ve cam) or (ve cham)) tuc va hanh lam va triet*.