Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hien xanh » hien hanh, hien nhanh, chieu xanh
trung cua » truong cua, trung tuan, trung cap
van thanh » ban thanh, van tuan
mang cua » manh cua, dung cua, ban cua
cong san » cong tac
than man » than ma, thanh san, tran manh

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 xanh - hanh ((mang cua) or (trung cua)) nhung cong san ((van thanh) or (than man))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - hanh ((mang cua) OR (trung cua)) nhung cong san ((van thanh) OR (than man)).
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - hanh ((mang cua) or (trung cua)) nhung cong san ((van thanh) or (than man))*.