Perhaps you should try some spelling variations:
chau tinh » cuu tinh, ha tinh, cua tinh
hanh tang » hanh trang, anh tang, hanh mang
van quang » van quan, tran quang, van tuan
chu tinh » chua tinh, cuu tinh, chu tich
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan cau » 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 ((chu tinh) OR (chau tinh)) - hanh tang ((luan van) or (van quang)) cong dan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chu tinh) OR (chau tinh)) - hanh tang ((luan van) OR (van quang)) cong dan toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chu tinh) OR (chau tinh)) - hanh tang ((luan van) or (van quang)) cong dan toan cau".
• Adding a wildcard symbol may retrieve word variants: theo ((chu tinh) OR (chau tinh)) - hanh tang ((luan van) or (van quang)) cong dan toan cau*.