Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu sang » chieu sach, chieu xanh, hieu lang
nhanh mang » nhanh lang, hanh mang, nhanh quang
van dung » van dong, xay dung
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chieu sang - nhanh mang ((van dung) or (tin dung)) cong tac toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sang - nhanh mang ((van dung) OR (tin dung)) cong tac toan ban.
• Adding a wildcard symbol may retrieve word variants: theo chieu sang - nhanh mang ((van dung) or (tin dung)) cong tac toan ban*.