Perhaps you should try some spelling variations:
trinh luan » trinh luat, trinh quan, trinh han
hanh trinh » canh tranh, hanh chinh
hoc thieu » toc thieu
luan hung » luan chung, lan hung, luan ung
duong van » duong va, luong va, dang van
song van » hoang van, trong van, dang van
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 thieu) or (hoc hien)) sach - hanh trinh luan hung ((song van) OR (duong van)) ban cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (hoc hien)) sach - hanh trinh luan hung ((song van) OR (duong van)) ban cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc thieu) or (hoc hien)) sach - hanh trinh luan hung ((song van) OR (duong van)) ban cau".
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (hoc hien)) sach - hanh trinh luan hung ((song van) OR (duong van)) ban cau*.