Perhaps you should try some spelling variations:
cang thang » cong thanh, dang thanh
tranh hang » trinh han, tran hoang, tran hong
hieu xanh » chieu xanh, hieu manh, hieu nganh
canh hang » danh thang, manh thang, thanh hang
doc hieu » toc thieu, hoc thieu, hoc hien
va trong » va truong, va thong, va tuong
cong san » cong tac
san phan » san pham, van phan, sat phan

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu xanh - ((((canh hang) OR (cang thang))) or (tranh hang)) va trong cong san phan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu xanh - ((((canh hang) OR (cang thang))) OR (tranh hang)) va trong cong san phan tu*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu xanh - ((((canh hang) OR (cang thang))) or (tranh hang)) va trong cong san phan tu*".