Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
nhung cong » dung cong, thong cong, hang cong
ho chieu » theo chieu, hoc thieu, doi chieu
tuong va » truong va, thuong va, luong va
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan cau » toan cao, toan ban, toan tap
tung va » trung va, dung va, vung va

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu sang - thanh ((tung va) or (tuong va)) nhung cong tac toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sang - thanh ((tung va) OR (tuong va)) nhung cong tac toan cau.
• Adding a wildcard symbol may retrieve word variants: ho chieu sang - thanh ((tung va) or (tuong va)) nhung cong tac toan cau*.