Perhaps you should try some spelling variations:
doanh van » doan van, doanh va, doanh ban
danh vai » danh sai, danh va, dang van
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
hieu va » lieu va, hieu qua
va giao » van giao, va giai, va gia
cua tre » cuu tre, cua triet, dua tren
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
cua te » cua tu

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 lang xa hoi. hieu va giao duc va ((danh vai) or (doanh van)) ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky lang xa hoi. hieu va giao duc va ((danh vai) OR (doanh van)) ((cua tre) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: tu sac ky lang xa hoi. hieu va giao duc va ((danh vai) or (doanh van)) ((cua tre) or (cua te))*.