Perhaps you should try some spelling variations:
cang thang » cong thanh, dang thanh
chung cong » nhung cong, chong cong, phung cong
hieu manh » chieu xanh, hieu nganh, dieu hanh
nang hang » nang sang, hang hang, lang thang
hoc hieu » hoc thieu, hoc hien, doc hieu
co chung » cao chung, ho chung, so chung
tan toan » tan tran, tap toan, dan toan
van toan » van tuan, van tan, van thanh

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 - ((nang hang) or (cang thang)) co chung cong ((tan toan) or (van toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu manh - ((nang hang) OR (cang thang)) co chung cong ((tan toan) OR (van toan)) cau.
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - ((nang hang) or (cang thang)) co chung cong ((tan toan) or (van toan)) cau*.