Perhaps you should try some spelling variations:
theo chieu » ho chieu, theo chu, thi chieu
thanh tung » thanh cong
cong vang » cong lang, cong quang, cong ngang
cong van » cong san, song van, cong tan
toan cao » toan ban, toan tap
tung va » trung va, tuong va, dung va
va tong » va thong, va tuong, va trong

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((theo chieu) or (theo tieu)) xanh - thanh tung va tong ((cong van) OR (cong vang)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (theo tieu)) xanh - thanh tung va tong ((cong van) OR (cong vang)) toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chieu) or (theo tieu)) xanh - thanh tung va tong ((cong van) OR (cong vang)) toan cao".
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (theo tieu)) xanh - thanh tung va tong ((cong van) OR (cong vang)) toan cao*.