Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
hieu manh » chieu xanh, hieu nganh, dieu hanh
trinh cua » tinh cua, trinh luat, trinh quan
cua nhung » va nhung
hoc hieu » hoc thieu, hoc hien, doc hieu
cong dan » cong san, cong dong, cong tac
cong tan » cong tac, cong san, cong thanh
chan tu » phan tu, han tu, chon tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hieu manh - hanh trinh cua nhung ((((cong dan) OR (huong dan))) or (cong tan)) chan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu manh - hanh trinh cua nhung ((((cong dan) OR (huong dan))) OR (cong tan)) chan tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hieu manh - hanh trinh cua nhung ((((cong dan) OR (huong dan))) or (cong tan)) chan tu".
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - hanh trinh cua nhung ((((cong dan) OR (huong dan))) or (cong tan)) chan tu*.