Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
chu xanh » chu manh, chieu xanh, chua xang
tang cua » mang cua, hang cua, tang luan
dung cua » dung cho
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan cau » toan cao, toan ban, toan tap
cho chu » cho thue

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

• Performing a fuzzy search may retrieve terms with similar spellings: cho chu xanh - hanh ((((tang cua) or (dung luan))) or (dung cua)) nhung cong tac toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: cho chu xanh - hanh ((((tang cua) OR (dung luan))) OR (dung cua)) nhung cong tac toan cau.
• Adding a wildcard symbol may retrieve word variants: cho chu xanh - hanh ((((tang cua) or (dung luan))) or (dung cua)) nhung cong tac toan cau*.