Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh trinh » canh tranh, hanh chinh
trinh tham » trinh cham, trinh tam, trinh kham
cong thanh » dong thanh, cong trinh, cong tan
tham dang » pham dang, tham lang, tham dinh
dang cong » dung cong
san cau » van cau, ban cau, can cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((chieu sach) or (trieu tinh)) - hanh trinh tham dang cong thanh san cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu sach) OR (trieu tinh)) - hanh trinh tham dang cong thanh san cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu sach) or (trieu tinh)) - hanh trinh tham dang cong thanh san cau*.