Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
hanh tranh » canh tranh, hanh trang, lanh tranh
luan nhung » luan chung, luan hung, quan nhung
dung vinh » dung ninh, quang vinh, dung von
dang vinh » dang dinh, dang sinh, dang tinh
theo chu » theo chieu, cho chu, chao chu
chu sach » cau sach, thu sach, chieu sach
toan ban » van 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 chu sach - ((hanh tranh) or (hanh trinh)) luan nhung ((dung vinh) OR (dang vinh)) toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chu sach - ((hanh tranh) OR (hanh trinh)) luan nhung ((dung vinh) OR (dang vinh)) toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chu sach - ((hanh tranh) or (hanh trinh)) luan nhung ((dung vinh) OR (dang vinh)) toan ban".
• Adding a wildcard symbol may retrieve word variants: theo chu sach - ((hanh tranh) or (hanh trinh)) luan nhung ((dung vinh) OR (dang vinh)) toan ban*.