Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
doi chieu » doc hieu, doi chi, ho chieu
dung cong » dung trong
thanh lap » thanh san, phan lap, thanh hai
tung cao » truong cao, trung cap, quang cao
nung cao » nang cao, nhung cau, quang cao
cong tan » cong tac, cong san, cong thanh
phan cau » phan dau, phan cac, phan tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chieu xanh - thanh ((tung cao) OR (nung cao)) dung cong tan ((phan cau) or (thanh lap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu xanh - thanh ((tung cao) OR (nung cao)) dung cong tan ((phan cau) OR (thanh lap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu xanh - thanh ((tung cao) OR (nung cao)) dung cong tan ((phan cau) or (thanh lap))".
• Adding a wildcard symbol may retrieve word variants: doi chieu xanh - thanh ((tung cao) OR (nung cao)) dung cong tan ((phan cau) or (thanh lap))*.