Perhaps you should try some spelling variations:
canh trinh » canh tranh, hanh trinh, canh tinh
trinh luan » trinh luat, trinh quan, trinh han
hieu manh » chieu xanh, hieu nganh, dieu hanh
phan cong » thanh cong
lang toan » dang toan, lang thang, lang thanh
toc hieu » toc thieu, doc hieu, hoc thieu
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc hieu manh - canh trinh luan ((phan cong) or (van dong)) lang toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc hieu manh - canh trinh luan ((phan cong) OR (van dong)) lang toan ban.
• Adding a wildcard symbol may retrieve word variants: toc hieu manh - canh trinh luan ((phan cong) or (van dong)) lang toan ban*.