Perhaps you should try some spelling variations:
doi trieu » dong trieu, doi chieu, doi trinh
hanh tinh » hanh trinh, nhanh tinh, thanh tinh
nhanh cau » nhanh cay, thanh chau, nhanh ha
tinh qua » tinh quan, trinh qua, tinh cua
qua dung » quang dung, su dung, qua song
cong tan » cong tac, cong thanh, cong ty
cong san » cong tac

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: doi trieu tinh - hanh tinh qua dung ((cong tan) OR (cong san)) nhanh cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi trieu tinh - hanh tinh qua dung ((cong tan) OR (cong san)) nhanh cau*".