Perhaps you should try some spelling variations:
di truyen » co truyen
ve triet » va trien, su triet
hanh dai » hanh tai, hanh dao, vanh dai
va hanh » van hanh, va thanh, va danh
so sach » so sanh, bo sach, co sach
cam tuc » cam xuc, nam thuc, dam thuc
hieu ve » hieu va, hieu van
cao hoi » cau hoi, co hoi, cao hoc
sach v » sach va, sach y, sach 2
cam tu » cam thu, nam tu, dam tu
v nang » va nang, vu nang, van nang

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: so sach v nang cao hoi. hieu ve ((cam tuc) OR (cam tu)) va hanh dai ((ve triet) or (di truyen))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach v nang cao hoi. hieu ve ((cam tuc) OR (cam tu)) va hanh dai ((ve triet) OR (di truyen))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach v nang cao hoi. hieu ve ((cam tuc) OR (cam tu)) va hanh dai ((ve triet) or (di truyen))*".