Perhaps you should try some spelling variations:
canh trinh » canh tranh, hanh trinh, canh tinh
thong cong » trong cong, tong cong, thong thong
hieu manh » chieu xanh, hieu nganh, dieu hanh
hang cong » hang nong, bang cong, thanh cong
dang cong » dung cong
hoc hieu » hoc thieu, hoc hien, doc hieu
tan ran » tan tran, tan van, tan san
ran cau » van cau, ban cau, can cau

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 - canh trinh luat ((thong cong) or (((hang cong) or (dang cong)))) tan ran cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu manh - canh trinh luat ((thong cong) OR (((hang cong) OR (dang cong)))) tan ran cau.
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - canh trinh luat ((thong cong) or (((hang cong) or (dang cong)))) tan ran cau*.