Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thanh vai » thanh hai, thanh van, thanh tai
cua triet » cua viet, su triet, va triet
hieu van » thien van, lieu va, hieu ve
vu khac » vu kham, vu khanh, bui khac
nang ma » tang ma, sang ma, nang cao
hieu va » lieu va, hieu qua
cam qua » cau qua, cac qua, cay qua
qua ban » cua ban, qua quan
cua tre » cua te, cuu tre, dua tren
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu khac ky nang ma hoi. ((hieu van) or (hieu va)) cam qua ban thanh vai ((cua tre) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu khac ky nang ma hoi. ((hieu van) OR (hieu va)) cam qua ban thanh vai ((cua tre) OR (cua triet)).
• Adding a wildcard symbol may retrieve word variants: vu khac ky nang ma hoi. ((hieu van) or (hieu va)) cam qua ban thanh vai ((cua tre) or (cua triet))*.