Perhaps you should try some spelling variations:
lieu tinh » trieu tinh, diep tinh, bien tinh
chau tinh » cuu tinh, ha tinh, cua tinh
tang chua » tang cua, tranh chua, tang ha
chua xang » chua nang, chuc nang, chu bang
xang cong » dang cong, bang cong, hang cong
cua sinh » hoa sinh, va sinh
anh tang » anh bang, anh dang, anh 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: theo ((lieu tinh) or (((chau tinh) or (cua sinh)))) - anh tang chua xang cong tac toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((lieu tinh) OR (((chau tinh) OR (cua sinh)))) - anh tang chua xang cong tac toan cau.
• Adding a wildcard symbol may retrieve word variants: theo ((lieu tinh) or (((chau tinh) or (cua sinh)))) - anh tang chua xang cong tac toan cau*.