Perhaps you should try some spelling variations:
hanh trung » thanh trung, hanh trang, manh trung
trung tham » trung tam, trung thanh, trung thang
tham nhung » thi nhung
hien tinh » khien tinh, thien tinh, bien tinh
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh
chan tap » han tap, phan tap, toan tap
chan ta » chan tha, nhan tai, nhan tao

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