Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
trung chan » trong chan, trung can, trung nhan
trung phan » trung thanh, trung ha, dung phan
trong tan » trong quan, trong cac, trong ca
ho chieu » theo chieu, hoc thieu, doi chieu
tan toan » tan tran, tap toan, van 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: ho chieu tinh - thanh ((trung chan) or (trung phan)) dung trong tan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu tinh - thanh ((trung chan) OR (trung phan)) dung trong tan toan cau.
• Adding a wildcard symbol may retrieve word variants: ho chieu tinh - thanh ((trung chan) or (trung phan)) dung trong tan toan cau*.