Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
canh trinh » canh tranh, hanh trinh, canh tinh
cuong dung » tuong duong, thong dung
tong luan » tang luan, dung luan, hang luan
ho chieu » theo chieu, hoc thieu, doi chieu
phan cau » phan cac, phan tu, phan lap
phan dau » phan tu, hang dau

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 tinh - canh trinh ((cuong dung) or (ung dung)) tong luan ((phan cau) OR (phan dau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu tinh - canh trinh ((cuong dung) OR (ung dung)) tong luan ((phan cau) OR (phan dau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu tinh - canh trinh ((cuong dung) or (ung dung)) tong luan ((phan cau) OR (phan dau))".
• Adding a wildcard symbol may retrieve word variants: ho chieu tinh - canh trinh ((cuong dung) or (ung dung)) tong luan ((phan cau) OR (phan dau))*.