Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
chua tinh » cua tinh, cha tinh, thuat tinh
anh quang » anh xquang, anh quan, nhanh quang
dang cong » dung cong
chu tinh » chau tinh, cuu tinh, chu tich
cua dang » cua cong, cua ban
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: theo ((chu tinh) or (chua tinh)) - ((anh quang) or (hanh trinh)) cua dang cong tap toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chu tinh) OR (chua tinh)) - ((anh quang) OR (hanh trinh)) cua dang cong tap toan cao.
• Adding a wildcard symbol may retrieve word variants: theo ((chu tinh) or (chua tinh)) - ((anh quang) or (hanh trinh)) cua dang cong tap toan cao*.