Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
hieu manh » chieu xanh, hieu nganh, dieu hanh
trinh cua » tinh cua, trinh luat, trinh quan
hang cong » dang cong, hang nong, thong cong
bang cong » dang cong, bang song, dung cong
tran chau » tranh chap, tran huu
hoc hieu » hoc thieu, hoc hien, doc hieu
san tran » tan tran, ban tran, dang tran

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hieu manh - hanh trinh cua ((((hang cong) OR (thanh cong))) or (bang cong)) san tran chau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu manh - hanh trinh cua ((((hang cong) OR (thanh cong))) OR (bang cong)) san tran chau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hieu manh - hanh trinh cua ((((hang cong) OR (thanh cong))) or (bang cong)) san tran chau".
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - hanh trinh cua ((((hang cong) OR (thanh cong))) or (bang cong)) san tran chau*.