Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
khanh lai » khanh luan, thanh lap, thanh loi
nang ma » tang ma, sang ma, nang cao
hieu ve » hieu va, hieu van
thuc xa » thuc xay, tuc xa, thuc ha
thuc va » thuc vat, thuc dan, thuc day
vu sach » vu bach, vu khach
lai cua » dai cua, hai cua, lai chau
su sach » so sach
y nang » ky nang, ly nang, v nang
ve nam » he nam, va nam, le nam

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 nam ((thuc xa) OR (thuc va)) 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 nam ((thuc xa) OR (thuc va)) 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 nam ((thuc xa) OR (thuc va)) khanh lai cua triet".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (vu sach)) y nang ma hoa. hieu ve nam ((thuc xa) OR (thuc va)) khanh lai cua triet*.