Perhaps you should try some spelling variations:
thieu manh » hieu manh, tien manh, trieu minh
hoc thieu » toc thieu, hoc hien
bang luan » tang luan, dung luan, tong luan
hang luan » tang luan, dung luan
hung cong » nhung cong, hung cuong, phung cong
cong tan » cong tac, cong san, cong thanh
toan cau » toan ban, toan tap, toan tai
toan cao » toan ban, toan tap

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

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu manh - anh ((bang luan) OR (hang luan)) hung cong tan ((toan cau) OR (toan cao))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu manh - anh ((bang luan) OR (hang luan)) hung cong tan ((toan cau) or (toan cao))~".
• Adding a wildcard symbol may retrieve word variants: hoc thieu manh - anh ((bang luan) OR (hang luan)) hung cong tan ((toan cau) or (toan cao))*.