Perhaps you should try some spelling variations:
ve doanh » va doanh, de doanh, te doanh
cham cuu » cap cuu, chat cua
thu sai » thu hai, thu tai, thu san
hieu vu » hieu ve, hieu su, dieu vu
hieu va » lieu va, hieu qua
cuc tre » duc tre, cua tre, cuc thue
cuu tre » cua tre, cau tren, cau treo
sai ky » sac ky
cuu ve » cuu va

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sai ky nang x ho. ((hieu vu) or (hieu va)) cham cuu ve doanh tai ((cuc tre) OR (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sai ky nang x ho. ((hieu vu) OR (hieu va)) cham cuu ve doanh tai ((cuc tre) OR (cuu tre))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sai ky nang x ho. ((hieu vu) or (hieu va)) cham cuu ve doanh tai ((cuc tre) OR (cuu tre))*".