Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
chau tinh » cuu tinh, ha tinh, cua tinh
hanh hang » thanh hang, hang hang, hanh mang
cua thong » cua thuong, cua khong, cua tong
hanh han » hanh nhan, hanh phan, hanh san
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
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 ((chau tinh) or (diep tinh)) - ((hanh hang) OR (hanh han)) cua thong cong dan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chau tinh) OR (diep tinh)) - ((hanh hang) OR (hanh han)) cua thong cong dan toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chau tinh) or (diep tinh)) - ((hanh hang) OR (hanh han)) cua thong cong dan toan cao".
• Adding a wildcard symbol may retrieve word variants: theo ((chau tinh) or (diep tinh)) - ((hanh hang) OR (hanh han)) cua thong cong dan toan cao*.