Perhaps you should try some spelling variations:
thanh thong » thanh thuong, thanh hong, thanh thang
chieu xanh » chieu sach, chieu sang, chieu tinh
hieu xanh » hieu manh, hieu nganh, dieu hanh
dung song » dung cong, dung dong, vung song
thanh cap » hanh cap, than cap, thanh ca
thanh lap » thanh san, phan lap, thanh hai
thong su » thong tu, thong cua, thong qua
song van » hoang van, trong van, duong van

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) OR (chieu xanh)) - thanh thong su dung song van ((thanh cap) or (thanh lap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((hieu xanh) OR (chieu xanh)) - thanh thong su dung song van ((thanh cap) OR (thanh lap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc ((hieu xanh) OR (chieu xanh)) - thanh thong su dung song van ((thanh cap) or (thanh lap))".
• Adding a wildcard symbol may retrieve word variants: doc ((hieu xanh) OR (chieu xanh)) - thanh thong su dung song van ((thanh cap) or (thanh lap))*.