Perhaps you should try some spelling variations:
thieu manh » hieu manh, tien manh, trieu minh
hoc thieu » toc thieu, hoc hien
trinh vat » trinh van, trinh luat, sinh vat
hang cong » dang cong, hang nong, bang cong
trinh va » trinh van, trinh ve, trinh vi
dan chan » dan gian, dan ca
van chat » cao chat

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 - hanh ((trinh va) OR (trinh vat)) hang cong ((dan chan) OR (van chat)) cau~.
• Adding a wildcard symbol may retrieve word variants: hoc thieu manh - hanh ((trinh va) or (trinh vat)) hang cong ((dan chan) or (van chat)) cau*.