Perhaps you should try some spelling variations:
hanh tranh » hanh trinh, hanh trang, lanh tranh
thieu manh » tien manh, trieu minh, chieu xanh
trung cong » truong cong, trong cong, trung uong
hieu manh » chieu xanh, hieu nganh, dieu hanh
cua trung » cua truong, xuan trung, cua nhung
cong tan » cong tac, cong san, cong thanh
tan chan » dan chan, ban chan, can chan
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 (hieu manh)) - ((hanh tranh) OR (canh tranh)) cua trung cong tan chan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu manh) OR (hieu manh)) - ((hanh tranh) OR (canh tranh)) cua trung cong tan chan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu manh) or (hieu manh)) - ((hanh tranh) OR (canh tranh)) cua trung cong tan chan cao".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu manh) or (hieu manh)) - ((hanh tranh) OR (canh tranh)) cua trung cong tan chan cao*.