Perhaps you should try some spelling variations:
hanh trung » thanh trung, hanh trang, manh trung
hien xanh » hien hanh, hien nhanh, chieu xanh
phat hanh » phat thanh, pham hanh, phan thanh
nhat hanh » nhat ban, nhat minh
cong dan » cong san, cong tan, huong dan
dan chan » dan gian, dan ca, van chat
chan cau » phan cau, can cau, chinh cau

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 - hanh trung ((((phat hanh) OR (pham thanh))) or (nhat hanh)) cong dan chan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - hanh trung ((((phat hanh) OR (pham thanh))) OR (nhat hanh)) cong dan chan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien xanh - hanh trung ((((phat hanh) OR (pham thanh))) or (nhat hanh)) cong dan chan cau".
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - hanh trung ((((phat hanh) OR (pham thanh))) or (nhat hanh)) cong dan chan cau*.