Perhaps you should try some spelling variations:
chieu tinh » lieu tinh, chau tinh, kieu tinh
thanh tung » thanh cong
tung luan » dung luan, tang luan, tong luan
luan nang » luan van, van nang, luan san
nang cong » nang song, dang cong, bang cong
dan toan » van toan, dan than, manh toan
dan chan » dan gian, dan ca, van chat

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

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