Perhaps you should try some spelling variations:
ha triet » nha triet, va triet, hanh triet
hanh dam » thanh dam, hanh lam, hanh nam
va hanh » van hanh, va thanh, va danh
cam tuc » cam tu, nam thuc, dam thuc
tu sach » thu sach, su sach, te sach
hieu ve » hieu va, hieu van
dam ha » nam ha, dam phan

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 hanh) or (thi thanh)) xa hoi. hieu ve ((cam tuc) OR (cam xuc)) va hanh dam ha triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((thi hanh) OR (thi thanh)) xa hoi. hieu ve ((cam tuc) OR (cam xuc)) va hanh dam ha triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((thi hanh) or (thi thanh)) xa hoi. hieu ve ((cam tuc) OR (cam xuc)) va hanh dam ha triet".
• Adding a wildcard symbol may retrieve word variants: tu sach ((thi hanh) or (thi thanh)) xa hoi. hieu ve ((cam tuc) OR (cam xuc)) va hanh dam ha triet*.