Perhaps you should try some spelling variations:
chieu tinh » lieu tinh, chau tinh, kieu tinh
canh manh » lanh manh, canh tranh, cach mang
dung cong » dung trong
van manh » van minh, van anh, van hanh
cua dung » cua dang, cua dong, qua dung
cong tap » cuong tap, cong tac, cong tan
tap toan » tap doan, tap quan, bai 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: ho ((chieu tinh) OR (trieu tinh)) - ((canh manh) or (van manh)) cua dung cong tap toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu tinh) OR (trieu tinh)) - ((canh manh) OR (van manh)) cua dung cong tap toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu tinh) OR (trieu tinh)) - ((canh manh) or (van manh)) cua dung cong tap toan cao".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu tinh) OR (trieu tinh)) - ((canh manh) or (van manh)) cua dung cong tap toan cao*.