Perhaps you should try some spelling variations:
thieu manh » hieu manh, tien manh, trieu minh
hanh tranh » canh tranh, hanh trinh, hanh trang
hoc thieu » toc thieu, hoc hien
cua trong » cua truong, cua trung, ca trong
qua trong » quan trong, qua trinh, qua song
cong tan » cong tac, cong san, cong thanh
chan cao » chat cao, chay cao, toan cao
chan cho » chat cho, han cho, chuan chon

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 trong) OR (qua trong)) cong tan ((chan cao) or (chan cho))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu manh - hanh tranh ((cua trong) OR (qua trong)) cong tan ((chan cao) OR (chan cho)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu manh - hanh tranh ((cua trong) OR (qua trong)) cong tan ((chan cao) or (chan cho))".
• Adding a wildcard symbol may retrieve word variants: hoc thieu manh - hanh tranh ((cua trong) OR (qua trong)) cong tan ((chan cao) or (chan cho))*.