Perhaps you should try some spelling variations:
thanh dung » thanh duong, thanh tung, thanh hung
thong cong » trong cong, tong cong, thong thong
hoc thieu » toc thieu, hoc hien
doi chieu » doc hieu, doi chi, ho chieu
cua thong » cua thuong, cua khong, cua tong
dung cua » dung luan, dung cho
cong ban » cong bang, cong san, cong tan
cua cau » cua cac, cua chu, cua can
cua cay » cua cac

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (doi chieu)) xanh - thanh dung cua thong cong ban ((cua cau) OR (cua cay))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc thieu) or (doi chieu)) xanh - thanh dung cua thong cong ban ((cua cau) OR (cua cay))~".
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (doi chieu)) xanh - thanh dung cua thong cong ban ((cua cau) OR (cua cay))*.