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
tranh cua » doanh cua, manh cua
cua trong » cua truong, cua trung, qua trong
cong tan » cong tac, cong san, cong thanh
chan cao » chan cho, toan cao, nha cao
chay cao » cay cao, nha cao, cay co
chat cao » chat co, chat cho, chat bao

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