Perhaps you should try some spelling variations:
khong cong » thong cong, khong cang, chong cong
doi trieu » dong trieu, doi chieu, doi trinh
hanh tang » hanh trang, anh tang, hanh mang
cua khong » hua khong, cua phuong, cua thuong
tang cua » mang cua, hang cua, tang luan
cong tac » cong ty
toan cao » 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: doi trieu tinh - hanh tang cua khong cong tac ((toan cao) or (((toan ban) or (van ban))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi trieu tinh - hanh tang cua khong cong tac ((toan cao) OR (((toan ban) OR (van ban)))).
• Adding a wildcard symbol may retrieve word variants: doi trieu tinh - hanh tang cua khong cong tac ((toan cao) or (((toan ban) or (van ban))))*.