Perhaps you should try some spelling variations:
hanh tranh » hanh trang, lanh tranh, nhanh thanh
hanh trinh » hanh chinh
nhung tung » nhung tuong, nhung dung, nhung vung
tung manh » hung manh, duong manh, luong manh
manh toan » thanh toan, anh tuan, tinh toan
theo chu » theo chieu, cho chu, chao chu
chu sach » cau sach, thu sach, chieu sach
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chu sach - ((((hanh tranh) OR (canh tranh))) or (hanh trinh)) va nhung tung manh toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chu sach - ((((hanh tranh) OR (canh tranh))) OR (hanh trinh)) va nhung tung manh toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chu sach - ((((hanh tranh) OR (canh tranh))) or (hanh trinh)) va nhung tung manh toan cao".
• Adding a wildcard symbol may retrieve word variants: theo chu sach - ((((hanh tranh) OR (canh tranh))) or (hanh trinh)) va nhung tung manh toan cao*.