Perhaps you should try some spelling variations:
cong luong » cong thuong, nang luong, cong dong
hang doanh » hanh doanh, nhung doanh, van doanh
hieu tinh » chieu tinh, lieu tinh, kieu tinh
doanh qua » doanh quan, doanh cua, danh qua
qua trong » quan trong, qua trinh, qua song
cong cang » cong cong, cong lang, cong vang
thang cha » thanh cha, thang cua, khang chan
doc hieu » toc thieu, hoc thieu, hoc hien

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 - hang doanh qua trong ((cong cang) or (cong luong)) thang cha~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu tinh - hang doanh qua trong ((cong cang) OR (cong luong)) thang cha.
• Adding a wildcard symbol may retrieve word variants: doc hieu tinh - hang doanh qua trong ((cong cang) or (cong luong)) thang cha*.