Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hanh tinh » hanh trinh, nhanh tinh, thanh tinh
cua nhung » va nhung
tinh cua » trinh cua, sinh cua, tinh chat
cong dan » cong san, cong tan, huong dan
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: ((doi khi) or (hoc hien)) xanh - hanh tinh cua nhung cong dan ((chan tap) OR (chan ta))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi khi) OR (hoc hien)) xanh - hanh tinh cua nhung cong dan ((chan tap) OR (chan ta)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi khi) or (hoc hien)) xanh - hanh tinh cua nhung cong dan ((chan tap) OR (chan ta))".
• Adding a wildcard symbol may retrieve word variants: ((doi khi) or (hoc hien)) xanh - hanh tinh cua nhung cong dan ((chan tap) OR (chan ta))*.