Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
khanh lai » khanh luan, thanh lap, thanh loi
xa khanh » xa thanh, van khanh, dat khanh
hieu va » lieu va, hieu qua
lai cua » dai cua, hai cua, lai chau
cam tuc » cam xuc, cam tu, nam thuc
su sach » so sach
hieu ve » hieu van
nang ma » tang ma, sang ma, nang cao
vu sach » vu bach, vu khach
y nang » ky nang, ly nang, v nang

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

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