Perhaps you should try some spelling variations:
thuyet anh » thuyet kinh, thuyet dan, nguyet anh
hanh trong » anh trong, hinh trong, chinh trong
hanh trang » thanh trung, canh tranh, hanh trinh
nhung cong » dung cong, thong cong, hang cong
cong luan » tong luan, cong tuan, dong luan
thuy anh » thuy linh

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thuyet anh) or (thuy anh)) - ((hanh trong) OR (hanh trang)) va nhung cong luan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thuyet anh) OR (thuy anh)) - ((hanh trong) OR (hanh trang)) va nhung cong luan van ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thuyet anh) or (thuy anh)) - ((hanh trong) OR (hanh trang)) va nhung cong luan van ban".
• Adding a wildcard symbol may retrieve word variants: hoc ((thuyet anh) or (thuy anh)) - ((hanh trong) OR (hanh trang)) va nhung cong luan van ban*.