Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
hanh tranh » canh tranh, hanh trang, lanh tranh
tieu sach » chieu sach, te sach, viet sach
dien sach » dien anh
dung cong » dung trong
cong manh » cong danh, duong manh, cong thanh
manh toan » thanh toan, anh tuan, tinh toan
cua dung » cua dang, cua dong, qua dung
toan tap » toan ban

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) OR (hanh trinh)) cua dung cong manh toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((tieu sach) OR (dien sach)) - ((hanh tranh) OR (hanh trinh)) cua dung cong manh toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((tieu sach) or (dien sach)) - ((hanh tranh) OR (hanh trinh)) cua dung cong manh toan tap".
• Adding a wildcard symbol may retrieve word variants: theo ((tieu sach) or (dien sach)) - ((hanh tranh) OR (hanh trinh)) cua dung cong manh toan tap*.