Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hoc thieu » toc thieu, hoc hien
nong cong » cong cong, tong cong, nang cong
dung cua » dung luan
cong tan » cong tac, cong san, cong thanh
tan than » tan thanh, tan tran, ban 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: hoc thieu xanh - thanh ((dung cua) OR (dung cho)) nong cong tan than cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - thanh ((dung cua) OR (dung cho)) nong cong tan than cau".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - thanh ((dung cua) OR (dung cho)) nong cong tan than cau*.