Perhaps you should try some spelling variations:
thinh doan » chinh doanh, hinh toan, thi doan
nhung cong » dung cong, thong cong, hang cong
khoa sach » hoc sach
hanh doan » hanh doanh, thanh toan, nhanh hoan
doi khoa » noi khoa, hoi khoa, dai khoa
cong dan » cong san, cong tan, huong dan
dan phan » doan phan, dan chan, van phan
phan dau » phan tu, hang dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi khoa sach - ((hanh doan) or (thinh doan)) va nhung cong dan phan dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi khoa sach - ((hanh doan) OR (thinh doan)) va nhung cong dan phan dau.
• Adding a wildcard symbol may retrieve word variants: doi khoa sach - ((hanh doan) or (thinh doan)) va nhung cong dan phan dau*.