Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
thanh tung » thanh cong
trong mach » trong cac, trong minh, trong anh
doi chieu » doc hieu, doi chi, mot chieu
mach toan » manh toan, hach toan, mach tuan
tung dan » dung dan, huong dan, trung dai
dan dung » van dung, tin dung, ap dung
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: doi chieu tinh - thanh tung dan dung trong mach toan cau~.
• Adding a wildcard symbol may retrieve word variants: doi chieu tinh - thanh tung dan dung trong mach toan cau*.