Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
hanh trinh » canh tranh, hanh chinh
doi chieu » doc hieu, doi chi, mot chieu
hanh tinh » nhanh tinh, thanh tinh, canh tinh
dung cong » dung trong
tan nhanh » tai nhanh, tan nhan, tan thanh
nhanh cau » nhanh cay, thanh chau, nhanh ha
cong tan » cong tac, cong san, cong thanh

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 - ((hanh tinh) OR (hanh trinh)) su dung cong tan nhanh cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu tinh - ((hanh tinh) OR (hanh trinh)) su dung cong tan nhanh cau*".