Perhaps you should try some spelling variations:
hanh trang » thanh trung, canh tranh, hanh trinh
hieu manh » chieu xanh, hieu nganh, dieu hanh
hieu lang » chieu sang, hieu quang, nhieu tang
hanh tang » anh tang, hanh mang, hanh tung
dung cong » dung trong
cua dung » cua dang, cua dong, qua dung
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((hieu manh) or (hieu lang)) - ((hanh tang) or (hanh trang)) cua dung cong tac toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((hieu manh) OR (hieu lang)) - ((hanh tang) OR (hanh trang)) cua dung cong tac toan cao.
• Adding a wildcard symbol may retrieve word variants: theo ((hieu manh) or (hieu lang)) - ((hanh tang) or (hanh trang)) cua dung cong tac toan cao*.