Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hieu xanh » chieu xanh, hieu manh, hieu nganh
trung cap » truong cao, trung tam
doc hieu » toc thieu, hoc thieu, hoc hien
hang cua » mang cua, hang ca, huong cua
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than cau » toan cau, phan cau, than cap

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 ((((dung cho) or (trung cap))) or (hang cua)) nhung cong dan than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu xanh - hanh ((((dung cho) OR (trung cap))) OR (hang cua)) nhung cong dan than cau.
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - hanh ((((dung cho) or (trung cap))) or (hang cua)) nhung cong dan than cau*.