Perhaps you should try some spelling variations:
thieu manh » hieu manh, trieu minh, chieu xanh
tien manh » tien anh, tien thanh, tieng anh
hanh tang » hanh trang, anh tang, hanh mang
cua trong » cua truong, cua trung, qua trong
tang cua » mang cua, hang cua, tang luan
cong san » cong tac
san chan » san chang, dan chan, san chay
chan cao » chan cho, chat cao, chay cao

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) or (tien manh)) - hanh tang cua trong cong san chan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu manh) OR (tien manh)) - hanh tang cua trong cong san chan cao.
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu manh) or (tien manh)) - hanh tang cua trong cong san chan cao*.