Perhaps you should try some spelling variations:
nhung khuong » nhung phuong, nhung huong, nhung chong
khuong tinh » chuong trinh, phuong trinh, phuong binh
thieu tinh » chieu tinh, thien tinh, lieu tinh
thang cua » thong cua, hang cua, than cua
tinh luan » trinh luan, binh luan, minh luan
tang cua » mang cua, hang cua, tang luan
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 ((thieu tinh) OR (trieu tinh)) - hanh ((thang cua) or (tang cua)) nhung khuong tinh luan san~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu tinh) OR (trieu tinh)) - hanh ((thang cua) OR (tang cua)) nhung khuong tinh luan san.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu tinh) OR (trieu tinh)) - hanh ((thang cua) or (tang cua)) nhung khuong tinh luan san".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu tinh) OR (trieu tinh)) - hanh ((thang cua) or (tang cua)) nhung khuong tinh luan san*.