Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sang » chieu sach, chieu xanh, hieu lang
phan dung » phan ung, chan dung, phan dong
phan dang » phan dau, phan cong, nhan dan
ho chieu » theo chieu, hoc thieu, doi chieu
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
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: ho chieu sang - thanh trung ((phan dung) OR (phan dang)) cong tac toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sang - thanh trung ((phan dung) OR (phan dang)) cong tac toan cao".
• Adding a wildcard symbol may retrieve word variants: ho chieu sang - thanh trung ((phan dung) OR (phan dang)) cong tac toan cao*.