Perhaps you should try some spelling variations:
chau tinh » cuu tinh, ha tinh, cua tinh
hieu lang » chieu sang, hieu quang, nhieu tang
hanh tang » hanh trang, anh tang, hanh mang
tong cong » trong cong, cong cong, dung cong
tang cua » mang cua, hang cua, tang luan
cua tong » cua cong, cua dong, cua nong
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan cau » 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 ((((chau tinh) or (trieu tinh))) or (hieu lang)) - hanh tang cua tong cong tac toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((((chau tinh) OR (trieu tinh))) OR (hieu lang)) - hanh tang cua tong cong tac toan cau.
• Adding a wildcard symbol may retrieve word variants: theo ((((chau tinh) or (trieu tinh))) or (hieu lang)) - hanh tang cua tong cong tac toan cau*.