Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thanh tri » thanh tra, thanh tai, chinh tri
cham cuu » cap cuu, chat cua
cua tre » cua te, cuu tre, cua triet
nang xa » nang x, lang xa, nang ma
hieu ve » hieu van
hieu va » lieu va, hieu qua
cam cuc » cam xuc, pham cuc
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sac ky nang xa hoi. ((hieu ve) or (hieu va)) ((cam cuc) OR (cham cuu)) ban thanh tri cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky nang xa hoi. ((hieu ve) OR (hieu va)) ((cam cuc) OR (cham cuu)) ban thanh tri cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky nang xa hoi. ((hieu ve) or (hieu va)) ((cam cuc) OR (cham cuu)) ban thanh tri cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang xa hoi. ((hieu ve) or (hieu va)) ((cam cuc) OR (cham cuu)) ban thanh tri cua tre*.