Perhaps you should try some spelling variations:
thieu manh » hieu manh, tien manh, trieu minh
doanh luan » doanh nhan
nhung dung » phuong dung, ung dung, thong dung
dung quang » dang quang, dung quan, luong quang
quang doan » quan doan, quang hoan, quang toan
hoc thieu » toc thieu, hoc hien
tranh cua » manh cua
doan cau » toan cau, doan dau, doan cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thieu manh - hanh ((tranh cua) or (((doanh cua) OR (doanh luan)))) nhung dung quang doan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu manh - hanh ((tranh cua) OR (((doanh cua) OR (doanh luan)))) nhung dung quang doan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu manh - hanh ((tranh cua) or (((doanh cua) OR (doanh luan)))) nhung dung quang doan cau".
• Adding a wildcard symbol may retrieve word variants: hoc thieu manh - hanh ((tranh cua) or (((doanh cua) OR (doanh luan)))) nhung dung quang doan cau*.