Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
nhung hong » nhung chong, nhung huong, nhung phong
trinh cua » tinh cua, trinh luat, trinh quan
cua nhung » va nhung
hong von » dong von, hong van, hong son
von luan » tong luan
luan ban » luan van, luan san, luan han

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((30 trieu) OR (25 trieu)) tinh - hanh trinh cua nhung hong von luan ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((30 trieu) OR (25 trieu)) tinh - hanh trinh cua nhung hong von luan ban*".