Perhaps you should try some spelling variations:
thanh trung » thanh tung
nhat chieu » nhat hieu, nha hieu, nhat bieu
chieu sang » chieu sach, chieu xanh, hieu lang
chua dang » cua dang, chua dong, chua xang
chua nang » chuc nang, chua xang, kha nang
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: nhat chieu sang - thanh trung ((chua dang) OR (chua nang)) cong tac toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "nhat chieu sang - thanh trung ((chua dang) OR (chua nang)) cong tac toan cau".
• Adding a wildcard symbol may retrieve word variants: nhat chieu sang - thanh trung ((chua dang) OR (chua nang)) cong tac toan cau*.