Perhaps you should try some spelling variations:
hieu manh » chieu xanh, hieu nganh, dieu hanh
tang luan » dung luan
trung cua » truong cua, trung tuan, trung cap
bang cong » dang cong, bang song, hang cong
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((hieu manh) or (trieu tinh)) - thanh ((tang luan) or (trung cua)) bang cong tac toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu manh) OR (trieu tinh)) - thanh ((tang luan) OR (trung cua)) bang cong tac toan tap.
• Adding a wildcard symbol may retrieve word variants: ho ((hieu manh) or (trieu tinh)) - thanh ((tang luan) or (trung cua)) bang cong tac toan tap*.