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