Perhaps you should try some spelling variations:
danh trung » dang trung, dinh trung, manh trung
hanh trang » thanh trung, canh tranh, hanh trinh
thong cong » trong cong, tong cong, thong thong
hien xanh » hien hanh, hien nhanh, chieu xanh
cua thong » cua thuong, cua khong, cua tong
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than cao » toan cao, thai cao, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien xanh - ((danh trung) or (hanh trang)) cua thong cong dan than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - ((danh trung) OR (hanh trang)) cua thong cong dan than cao.
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - ((danh trung) or (hanh trang)) cua thong cong dan than cao*.