Perhaps you should try some spelling variations:
khong cong » thong cong, khong cang, chong cong
hanh trang » thanh trung, canh tranh, hanh trinh
cua khong » hua khong, cua phuong, cua thuong
chi xanh » chi anh, chi danh, chi hanh
cong tan » cong tac, cong san, cong thanh
tan than » tan thanh, tan tran, ban than
than tap » toan tap, han tap, phan tap
doi chi » doi khi

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chi xanh - ((hanh trang) or (hanh chinh)) cua khong cong tan than tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chi xanh - ((hanh trang) OR (hanh chinh)) cua khong cong tan than tap*.