Perhaps you should try some spelling variations:
canh doanh » hanh doanh, chinh doanh, doanh doanh
cong ngang » cong nhan, cong quang, cong lang
dung quang » dang quang, dung quan, luong quang
hoc thiet » hoc thieu, hoc thuyet, toc thieu
doanh cua » doanh luan
cua nhung » va nhung
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 thiet) or (hoc hien)) tach - canh doanh cua nhung ((cong ngang) or (dung quang)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thiet) OR (hoc hien)) tach - canh doanh cua nhung ((cong ngang) OR (dung quang)) toan cao.
• Adding a wildcard symbol may retrieve word variants: ((hoc thiet) or (hoc hien)) tach - canh doanh cua nhung ((cong ngang) or (dung quang)) toan cao*.