Perhaps you should try some spelling variations:
thanh trung » thanh tung
hanh trinh » canh tranh, hanh chinh
doi chieu » doc hieu, doi chi, ho chieu
hoc thieu » toc thieu, hoc hien
dung cong » dung trong
cua dung » cua dang, cua dong, qua dung
cong tan » cong tac, cong san, cong thanh
tan phan » toan phan, than phan, van phan
phan cau » phan dau, phan cac, phan tu

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) or (hoc thieu)) tinh - ((hanh trinh) or (thanh trung)) cua dung cong tan phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (hoc thieu)) tinh - ((hanh trinh) OR (thanh trung)) cua dung cong tan phan cau.
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) or (hoc thieu)) tinh - ((hanh trinh) or (thanh trung)) cua dung cong tan phan cau*.