Perhaps you should try some spelling variations:
hanh trang » thanh trung, canh tranh, hanh trinh
chieu sach » chiet tach, chieu sang, chieu xanh
hanh tram » hanh tam, thanh tran, thanh tra
dung cong » dung trong
cong nang » cong ngang, cong lang, cong nong
van dung » van dong, xay dung, tin dung
nang ban » hang ban, nang quan, nang sang
ban cau » bang cau, ban can, van 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 (chinh sach)) - ((hanh tram) or (hanh trang)) van dung cong nang ban cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu sach) OR (chinh sach)) - ((hanh tram) OR (hanh trang)) van dung cong nang ban cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu sach) OR (chinh sach)) - ((hanh tram) or (hanh trang)) van dung cong nang ban cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu sach) OR (chinh sach)) - ((hanh tram) or (hanh trang)) van dung cong nang ban cau*.