Perhaps you should try some spelling variations:
khanh lai » khanh luan, thanh lap, thanh loi
cua triet » cua viet, su triet, va triet
chat tuc » chat xuc, luat tuc, chat huu
xa khanh » xa thanh, van khanh, dat khanh
so sach » so sanh, bo sach, co sach
hieu va » lieu va, hieu qua
hieu ve » hieu van
nang ma » tang ma, sang ma, nang cao
su viet » so viet
y nang » ky nang, ly nang, v nang
ma hoi » mai hoi, xa hoi, ma hoa

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 y nang ma hoi. ((hieu ve) OR (hieu va)) chat tuc xa khanh lai ((cua triet) or (su viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach y nang ma hoi. ((hieu ve) OR (hieu va)) chat tuc xa khanh lai ((cua triet) OR (su viet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach y nang ma hoi. ((hieu ve) OR (hieu va)) chat tuc xa khanh lai ((cua triet) or (su viet))".
• Adding a wildcard symbol may retrieve word variants: so sach y nang ma hoi. ((hieu ve) OR (hieu va)) chat tuc xa khanh lai ((cua triet) or (su viet))*.