Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hieu van » thien van, lieu va, hieu ve
cau quoc » cac quoc, cao quoc, han quoc
thanh vi » hanh vi, thanh va, thanh ve
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
cuu tre » cua tre, cau tren, cau treo
vu sac » vu sach, vu san, va sac
sac ky » cac ky, sai ky
gia » giao

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sac ky nang xa hoi. ((hieu va) or (hieu van)) cau quoc gia thanh vi ((cuu tre) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sac ky nang xa hoi. ((hieu va) OR (hieu van)) cau quoc gia thanh vi ((cuu tre) OR (cua triet)).
• Adding a wildcard symbol may retrieve word variants: vu sac ky nang xa hoi. ((hieu va) or (hieu van)) cau quoc gia thanh vi ((cuu tre) or (cua triet))*.