Perhaps you should try some spelling variations:
hieu manh » chieu xanh, hieu nganh, dieu hanh
nang cong » nang song, dang cong, bang cong
cong manh » cong danh, duong manh, cong thanh
manh toan » thanh toan, anh tuan, tinh toan
hoc hieu » hoc thieu, hoc hien, doc hieu
trinh va » trinh van, trinh vat, trinh ve
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: hoc hieu manh - hanh ((trinh va) or (trinh luat)) nang cong manh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu manh - hanh ((trinh va) OR (trinh luat)) nang cong manh toan ban.
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - hanh ((trinh va) or (trinh luat)) nang cong manh toan ban*.