Perhaps you should try some spelling variations:
ha triet » nha triet, va triet, hanh triet
hanh nam » thanh nam, hanh lam, hanh ngay
hieu va » lieu va, hieu qua
xa hanh » xa thanh, xa khanh, va hanh
cam tuc » cam xuc, cam tu, nam thuc
tu sach » thu sach, su sach, te sach
hieu ve » hieu van
nam ha » nam a, nam va, nam da

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) OR (hieu va)) cam tuc xa hanh nam 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) OR (hieu va)) cam tuc xa hanh nam 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) OR (hieu va)) cam tuc xa hanh nam ha triet".
• Adding a wildcard symbol may retrieve word variants: tu sach ((thi hanh) or (thi thanh)) xa hoi. ((hieu ve) OR (hieu va)) cam tuc xa hanh nam ha triet*.