Perhaps you should try some spelling variations:
hieu manh » chieu xanh, hieu nganh, dieu hanh
quan tong » quan trong, quan dong, quan long
tong cong » trong cong, cong cong, dung cong
manh toan » thanh toan, anh tuan, tinh toan
van thanh » ban thanh, van tuan
hoc hieu » hoc thieu, hoc hien, doc hieu
canh ban » can ban, canh dan, canh van
ban quan » van quan

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 ban quan tong cong ((manh toan) or (van thanh)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu manh - canh ban quan tong cong ((manh toan) OR (van thanh)) cau*.