Perhaps you should try some spelling variations:
chiet tach » chieu sach
hieu lang » chieu sang, hieu quang, nhieu tang
hanh tinh » hanh trinh, nhanh tinh, thanh tinh
tinh chua » tinh thua, tinh cua, dinh chua
chua bang » chu bang, chua nang, chua xang
bang cong » dang cong, bang song, hang cong
kham chua » kham pha
cong san » cong tac
chay cau » chay cao, chay chua, cay ca

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((hieu lang) or (chiet tach)) - hanh tinh chua bang cong san ((chay cau) or (kham chua))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu lang) OR (chiet tach)) - hanh tinh chua bang cong san ((chay cau) OR (kham chua)).
• Adding a wildcard symbol may retrieve word variants: ho ((hieu lang) or (chiet tach)) - hanh tinh chua bang cong san ((chay cau) or (kham chua))*.