Perhaps you should try some spelling variations:
hieu quang » thieu quang, hieu quan, hieu qua
canh doanh » hanh doanh, chinh doanh, doanh doanh
thang manh » thang thanh, thanh anh, hoang manh
hieu lang » chieu sang, nhieu tang, hieu van
manh toan » thanh toan, anh tuan, tinh toan
cua cang » cua cong, cua hang, cua can
cua dang » cua cong, cua ban
toan ban » van ban

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

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