Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
thang long » thanh cong
hanh mang » nhanh mang, hanh trang, nhanh lang
theo chu » theo chieu, cho chu, chao chu
chu sach » cau sach, thu sach, chieu sach
va thang » van thang, va thanh, va thong
long dan » long doan, cong dan, nong dan
dan toan » van toan, dan than, manh toan
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 mang) or (hanh trinh)) va thang long dan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chu sach - ((hanh mang) OR (hanh trinh)) va thang long dan toan cao.
• Adding a wildcard symbol may retrieve word variants: theo chu sach - ((hanh mang) or (hanh trinh)) va thang long dan toan cao*.