Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh tai » thanh tai, hang tai, han tai
dan hanh » dang hanh, dan khanh, dan thanh
thuc dan » thuc hanh, hoc dan, thuc vat
hieu va » lieu va, hieu qua
tai cua » thai cua, tai cuc, tri cua
su sach » vu sach
hieu ha » hieu hoa, hieu ca, hieu xa
nang xa » nang x, lang xa, nang ma
so sach » so sanh, bo sach, co sach

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sach)) ky nang xa hoi. ((hieu ha) OR (hieu va)) am thuc dan hanh tai cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) OR (so sach)) ky nang xa hoi. ((hieu ha) or (hieu va)) am thuc dan hanh tai cua triet~".
• Adding a wildcard symbol may retrieve word variants: ((su sach) OR (so sach)) ky nang xa hoi. ((hieu ha) or (hieu va)) am thuc dan hanh tai cua triet*.