Perhaps you should try some spelling variations:
thanh tuong » thanh thuong, thanh tung, thanh huong
theo chieu » theo tieu, ho chieu, theo chu
doi chieu » doc hieu, doi chi, ho chieu
tong song » tong cong, song song, dong song
van thang » van thanh, van khang, van hang
tuong va » truong va, thuong va, luong va
van tang » van trang, van nang, van tan
va tong » va thong, va tuong, va trong

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: ((theo chieu) OR (doi chieu)) xanh - thanh tuong va tong song ((van tang) OR (van thang)) ca~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chieu) or (doi chieu)) xanh - thanh tuong va tong song ((van tang) OR (van thang)) ca~".
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (doi chieu)) xanh - thanh tuong va tong song ((van tang) OR (van thang)) ca*.