Perhaps you should try some spelling variations:
chieu tinh » lieu tinh, chau tinh, kieu tinh
hanh tang » hanh trang, anh tang, hanh mang
tang luan » dung luan
phan cong » thanh cong
van cong » van dong, van phong, van duong
van tan » van tuan, van ban, van tai
tan tap » toan tap, han tap, tan tat

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