Perhaps you should try some spelling variations:
doanh tren » doanh tien, doanh trong, dinh tren
tren thuc » trien thuc, tron thuc, trinh thuc
chat soc » cham soc, chat hoc, chat doc
va doanh » van doanh, vay doanh, va danh
sach va » sach xa, sach ha, sach dao
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
va chat » van chat, va phat, cao chat
thuc te » thuc tien
sach v » sach y, sach 2, sach vay
soc va » hoc va, loc va, doc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: te ((sach v) or (sach va)) nang xa hoi. hieu va chat soc va doanh tren thuc te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach v) OR (sach va)) nang xa hoi. hieu va chat soc va doanh tren thuc te.
• Adding a wildcard symbol may retrieve word variants: te ((sach v) or (sach va)) nang xa hoi. hieu va chat soc va doanh tren thuc te*.