Perhaps you should try some spelling variations:
sach thi » sach thu, sach tai, sach thieu
thanh xa » thanh ha, thanh va, thanh ba
van hanh » van thanh, ban hanh, van anh
hanh lam » thanh lap, hanh kem, hanh va
va triet » va thiet, va trien, ve triet
tu sach » thu sach, su sach, te sach
tuc van » thuc van, truc van, tuc va
ve cam » ve cham, ve cac, va cam
va cao » va cac, va co, va dao
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 thanh xa hoi. hieu ((ve cam) or (va cao)) tuc van hanh lam va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach thi thanh xa hoi. hieu ((ve cam) OR (va cao)) tuc van hanh lam va triet.
• Adding a wildcard symbol may retrieve word variants: tu sach thi thanh xa hoi. hieu ((ve cam) or (va cao)) tuc van hanh lam va triet*.