Perhaps you should try some spelling variations:
phan thuc » nhan thuc, phap thuc, pham thuc
van thanh » ban thanh, van tuan
may nang » may nong, ky nang, cam nang
canh may » canh tay, hanh may, mang may
so canh » so sanh, bo canh, so danh
vai cua » dai cua, hai cua, lai cua
van anh » tuan anh, van minh
hieu va » lieu va, hieu qua
hieu ve » hieu van
nang xa » nang x, lang xa, nang ma
cua tre » cua te, cuu tre, cua triet

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

• Performing a fuzzy search may retrieve terms with similar spellings: so canh may nang xa hoi. ((hieu ve) OR (hieu va)) phan thuc ((van thanh) or (van anh)) vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so canh may nang xa hoi. ((hieu ve) OR (hieu va)) phan thuc ((van thanh) OR (van anh)) vai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so canh may nang xa hoi. ((hieu ve) OR (hieu va)) phan thuc ((van thanh) or (van anh)) vai cua tre".
• Adding a wildcard symbol may retrieve word variants: so canh may nang xa hoi. ((hieu ve) OR (hieu va)) phan thuc ((van thanh) or (van anh)) vai cua tre*.