Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
chieu sang » chieu sach, chieu xanh, hieu lang
tang cua » mang cua, hang cua, tang luan
dung cua » dung luan, dung cho
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 ((dieu hanh) or (chieu sang)) - hanh ((tang cua) or (dung cua)) thong cong tac toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((dieu hanh) OR (chieu sang)) - hanh ((tang cua) OR (dung cua)) thong cong tac toan cau.
• Adding a wildcard symbol may retrieve word variants: theo ((dieu hanh) or (chieu sang)) - hanh ((tang cua) or (dung cua)) thong cong tac toan cau*.