Perhaps you should try some spelling variations:
tan thanh » tran thanh, tang thanh, toan thanh
cham duc » pham duc, cham soc, pham duy
tu sach » thu sach, su sach, te sach
sach tu » sach thu, cach tu, sach ty
tu cong » thu cong, te cong, tai cong
cong xa » cong xay, cong xua, cong ha
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
lai cua » dai cua, hai cua, lai chau
hoi cua » hoi chuc

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 tu cong xa hoi. hieu ve cham duc tan thanh ((lai cua) or (hoi cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach tu cong xa hoi. hieu ve cham duc tan thanh ((lai cua) OR (hoi cua)) triet.
• Adding a wildcard symbol may retrieve word variants: tu sach tu cong xa hoi. hieu ve cham duc tan thanh ((lai cua) or (hoi cua)) triet*.