Perhaps you should try some spelling variations:
hanh doanh » hang doanh, chinh doanh, doanh doanh
cua thuong » cua truong, cua phuong, ca thuong
theo hieu » theo chieu, theo tieu, thien hieu
hieu quan » hieu qua, lieu quan, thien quan
cua thong » cua khong, cua tong, suat thong
van khang » van khanh, van thanh, van quang
van hang » van hoang, van thang, ban hang

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo hieu quan - hanh doanh ((cua thong) OR (cua thuong)) thong ((van hang) or (van khang)) tai~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo hieu quan - hanh doanh ((cua thong) OR (cua thuong)) thong ((van hang) OR (van khang)) tai.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo hieu quan - hanh doanh ((cua thong) OR (cua thuong)) thong ((van hang) or (van khang)) tai".
• Adding a wildcard symbol may retrieve word variants: theo hieu quan - hanh doanh ((cua thong) OR (cua thuong)) thong ((van hang) or (van khang)) tai*.