Perhaps you should try some spelling variations:
chinh doanh » kinh doanh
thong huong » thong thuong, thong duong, thong thong
canh doanh » doanh doanh, kinh doanh, canh tranh
hanh doanh » hang doanh, doanh doanh, kinh doanh
hieu lang » chieu sang, hieu quang, nhieu tang
cua thong » cua thuong, cua khong, cua tong
hoc hieu » hoc thieu, hoc hien, doc hieu
dan van » dang van, doan van, dao van

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

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