Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
nam thuc » nam thuoc, am thuc, nam thu
hanh vai » hanh vi, hanh va, hanh tai
sach thu » sach thue, sach thieu, sach tham
dang xay » dang van, van xay
ban hanh » ban hang
vai cua » dai cua, hai cua, lai cua
cam tuc » cam xuc, cam tu, dam thuc
sach ty » sach y, sach tu, xach tay
hieu ve » hieu va, hieu van
xay hoi » xa hoi, tay hoi, cay phoi

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 ty) OR (sach thu)) dang xay hoi. hieu ve ((cam tuc) or (nam thuc)) ban hanh vai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ty) OR (sach thu)) dang xay hoi. hieu ve ((cam tuc) OR (nam thuc)) ban hanh vai cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ty) OR (sach thu)) dang xay hoi. hieu ve ((cam tuc) or (nam thuc)) ban hanh vai cua triet".
• Adding a wildcard symbol may retrieve word variants: tu ((sach ty) OR (sach thu)) dang xay hoi. hieu ve ((cam tuc) or (nam thuc)) ban hanh vai cua triet*.