Perhaps you should try some spelling variations:
tieu tinh » trieu tinh, tieu trinh, lieu tinh
hanh tang » hanh trang, anh tang, hanh mang
tang luan » dung luan
van cong » van dong, van phong, phan cong
dan than » ban than, van than, dan toan
dan chan » dan gian, dan ca, van chat
van tuan » van quan, van ban, anh tuan

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo tieu tinh - hanh tang luan van cong ((((dan than) OR (dan chan))) or (van tuan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu tinh - hanh tang luan van cong ((((dan than) OR (dan chan))) OR (van tuan)) cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu tinh - hanh tang luan van cong ((((dan than) OR (dan chan))) or (van tuan)) cau*".