Perhaps you should try some spelling variations:
nhung tuong » nhung huong, nhung phuong, hung vuong
tuong lanh » thong lanh, tuong linh, thuong lang
hien tinh » khien tinh, thien tinh, bien tinh
tranh va » tranh van, trang va, trinh va
luan ban » luan van, luan han, luat ban
luan san » luan van, luan hoan, luan phan

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien tinh - canh tranh va nhung tuong lanh ((luan ban) or (luan san))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien tinh - canh tranh va nhung tuong lanh ((luan ban) OR (luan san)).
• Adding a wildcard symbol may retrieve word variants: hoc hien tinh - canh tranh va nhung tuong lanh ((luan ban) or (luan san))*.