Perhaps you should try some spelling variations:
chinh chau » chinh cau, chinh cho, chinh phu
nhung cong » dung cong, thong cong, hang cong
hieu xanh » chieu xanh, hieu manh, hieu nganh
chinh tai » chinh tri
doc hieu » toc thieu, hoc thieu, hoc hien
than cua » nhan cua, thai cua, ban cua
cong dan » cong san, cong tan, huong dan
han cua » hang cua, nhan cua, hanh cua

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

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