Perhaps you should try some spelling variations:
hanh trang » thanh trung, canh tranh, hanh trinh
trang luan » tang luan, tranh luan, trang tuan
phap tang » phap nang, phap tieng
phap sinh » phau sinh, phai sinh, phap tinh
van cong » van dong, van phong, phan cong
tac toan » tam toan, hach toan, tich toan
tap toan » tap doan, tap quan, bai toan

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 tang) or (phap sinh)) - hanh trang luan van cong ((tac toan) OR (tap toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((phap tang) OR (phap sinh)) - hanh trang luan van cong ((tac toan) OR (tap toan)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((phap tang) or (phap sinh)) - hanh trang luan van cong ((tac toan) OR (tap toan)) cau".
• Adding a wildcard symbol may retrieve word variants: theo ((phap tang) or (phap sinh)) - hanh trang luan van cong ((tac toan) OR (tap toan)) cau*.