Perhaps you should try some spelling variations:
khong thong » thong thong, khong trong, thong thuong
hanh doanh » hang doanh, chinh doanh, doanh doanh
theo hieu » theo chieu, theo tieu, thien hieu
doanh cua » doanh luan
cua khong » hua khong, cua phuong, cua thuong
thong van » trong van, thong va, thong quan
nhan tai » van tai, toan tai
hang tai » hang va, dung tai
han tai » van tai, toan tai, nhan tao

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