Perhaps you should try some spelling variations:
trien quang » tran quang, tuyen quang, dien quang
hang doanh » hanh doanh, nhung doanh, dung doanh
hoc trien » hoc tren, hoc tien, hoc truyen
van doanh » toan doanh, van dong, van thanh
cua thong » cua thuong, cua khong, cua tong
thong tap » thong cap, thong tai, thong lap
tong tap » tuong tac, trong tan, cong tac
toan cao » toan ban, toan tap

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

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