Perhaps you should try some spelling variations:
va triet » va thiet, va trien, ve triet
sach thi » sach tai, sach thieu, sach tham
hanh dam » thanh dam, hanh lam, hanh nam
sach thu » sach thue, sach thieu, sach tham
van hanh » van thanh, ban hanh, van anh
cam tuc » cam tu, nam thuc, dam thuc
hieu ve » hieu va, hieu van
hanh xa » hanh va, hanh ma, hanh xu
dam va » dam van, nam va, dam 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 thu)) hanh xa hoi. hieu ve ((cam tuc) or (cam xuc)) van hanh dam va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach thi) OR (sach thu)) hanh xa hoi. hieu ve ((cam tuc) OR (cam xuc)) van hanh dam va triet.
• Adding a wildcard symbol may retrieve word variants: tu ((sach thi) or (sach thu)) hanh xa hoi. hieu ve ((cam tuc) or (cam xuc)) van hanh dam va triet*.