Perhaps you should try some spelling variations:
cong thanh » dong thanh, cong trinh, cong tan
theo phap » thi phap
phap tinh » phap sinh, phap tieng, phap tang
luan bang » luan nang, luan tang, tuan bang
cong manh » cong danh, duong manh, hoang manh
anh bang » anh hoang, anh quang, tinh bang
luan ban » luan van, luan san, luan han
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo phap tinh - anh bang ((luan bang) or (luan ban)) ((cong manh) OR (cong thanh)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo phap tinh - anh bang ((luan bang) OR (luan ban)) ((cong manh) OR (cong thanh)) toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo phap tinh - anh bang ((luan bang) or (luan ban)) ((cong manh) OR (cong thanh)) toan cao".
• Adding a wildcard symbol may retrieve word variants: theo phap tinh - anh bang ((luan bang) or (luan ban)) ((cong manh) OR (cong thanh)) toan cao*.