Perhaps you should try some spelling variations:
cuc triet » cua triet, su triet, cac trieu
dan hanh » dang hanh, dan khanh, dan thanh
hanh tai » thanh tai, hang tai, han tai
ky lang » ky nang, ky dang, ky tang
lang ha » long ha
hieu va » hieu qua
xu bac » xa bac
bac ky » cac ky, ban ky, sac ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: xu bac ky lang ha noi. ((hieu va) or (lieu va)) co hoc dan hanh tai cuc triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: xu bac ky lang ha noi. ((hieu va) OR (lieu va)) co hoc dan hanh tai cuc triet.
• Adding a wildcard symbol may retrieve word variants: xu bac ky lang ha noi. ((hieu va) or (lieu va)) co hoc dan hanh tai cuc triet*.