Perhaps you should try some spelling variations:
tranh quang » tran quang, trinh quang, tinh quang
quang trung » truong trung
hanh tranh » canh tranh, hanh trinh, hanh trang
tieu sach » chieu sach, te sach, viet sach
dien sach » dien anh
cong dan » cong san, cong tan, cong dong
phan dau » phan tu, hang dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((tieu sach) or (dien sach)) - hanh tranh quang trung ((cong dan) OR (huong dan)) phan dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((tieu sach) OR (dien sach)) - hanh tranh quang trung ((cong dan) OR (huong dan)) phan dau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((tieu sach) or (dien sach)) - hanh tranh quang trung ((cong dan) OR (huong dan)) phan dau".
• Adding a wildcard symbol may retrieve word variants: theo ((tieu sach) or (dien sach)) - hanh tranh quang trung ((cong dan) OR (huong dan)) phan dau*.