Perhaps you should try some spelling variations:
canh doanh » hanh doanh, chinh doanh, doanh doanh
nhung cong » dung cong, thong cong, hang cong
hieu tinh » chieu tinh, lieu tinh, kieu tinh
doc hieu » toc thieu, hoc thieu, hoc hien
doanh va » doan va, doanh tai, doanh cua
cong tan » cong tac, cong san, cong thanh
phan cac » nhan cach, phan lap, phan van
phan dau » 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: doc hieu tinh - canh doanh va nhung cong tan ((((phan cac) or (phan dau))) or (phan tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu tinh - canh doanh va nhung cong tan ((((phan cac) OR (phan dau))) OR (phan tu)).
• Adding a wildcard symbol may retrieve word variants: doc hieu tinh - canh doanh va nhung cong tan ((((phan cac) or (phan dau))) or (phan tu))*.