Perhaps you should try some spelling variations:
van doanh » toan doanh, van dong, van thanh
doanh van » doan van, doanh va, doanh ban
thu nang » thi nang, thu hang, thu bang
thi cong » tai cong, thien cong
cham tuc » nham thuc, pham thuc, tham thuc
tu sach » thu sach, su sach, tu cach
ve cham » va cham, ve chat, vu cham
van cua » vang cua, ban cua, dan cua
tuc van » thuc van, truc van, tuc va
hieu ve » hieu va, hieu van
te sach » toc sach
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: ((tu sach) or (te sach)) ((thu nang) or (thi cong)) xa hoi. hieu ve cham tuc van doanh van cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (te sach)) ((thu nang) OR (thi cong)) xa hoi. hieu ve cham tuc van doanh van cua tre.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (te sach)) ((thu nang) or (thi cong)) xa hoi. hieu ve cham tuc van doanh van cua tre*.