Perhaps you should try some spelling variations:
hanh doanh » hang doanh, chinh doanh, doanh doanh
khong dang » khong cang, khong dung, khong dong
hieu lang » chieu sang, hieu quang, nhieu tang
doanh cua » doanh luan
cua khong » hua khong, cua phuong, cua thuong
hue lang » que lang, hue quang, quet lang
toan tap » toan ban
han tap » han tai, nhan 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: thien ((hue lang) OR (hieu lang)) - hanh doanh cua khong dang su ((han tap) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thien ((hue lang) OR (hieu lang)) - hanh doanh cua khong dang su ((han tap) OR (toan tap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "thien ((hue lang) OR (hieu lang)) - hanh doanh cua khong dang su ((han tap) or (toan tap))".
• Adding a wildcard symbol may retrieve word variants: thien ((hue lang) OR (hieu lang)) - hanh doanh cua khong dang su ((han tap) or (toan tap))*.