Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
thanh tung » thanh cong
hoc thieu » toc thieu, hoc hien
dung cong » dung trong
tung cua » trung cua, tuong cua, dung cua
cua dung » cua dang, cua dong, qua dung
cong ban » cong bang, cong san, cong tan
dung cu » dung cua, dung co, dung cho

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