Perhaps you should try some spelling variations:
quang tuan » quang thanh, quan luan, quang cua
trung cong » truong cong, trong cong, trung uong
hien xanh » hien hanh, hien nhanh, chieu xanh
hung tuan » hung tran, trung tuan, hung thang
nhung cau » chung cu, nhung bai, nhu cau
cong san » cong tac
hang cau » hang dau, hang ca, nang cao

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 - thanh ((hung tuan) or (quang tuan)) trung cong san ((hang cau) OR (nhung cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - thanh ((hung tuan) OR (quang tuan)) trung cong san ((hang cau) OR (nhung cau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien xanh - thanh ((hung tuan) or (quang tuan)) trung cong san ((hang cau) OR (nhung cau))".
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - thanh ((hung tuan) or (quang tuan)) trung cong san ((hang cau) OR (nhung cau))*.