Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu xanh » chieu sach, chieu sang, chieu tinh
cong thanh » cong trinh, cong tan, truong thanh
dong thanh » truong thanh
nhan dang » phan dang, tran dang
nhan dan » phan dau, gian dan, nhan tai
toan cao » toan ban, toan tap
va hang » van hang, va nang, va lang

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 xanh - ((nhan dang) or (nhan dan)) va hang ((cong thanh) OR (dong thanh)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu xanh - ((nhan dang) OR (nhan dan)) va hang ((cong thanh) OR (dong thanh)) toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu xanh - ((nhan dang) or (nhan dan)) va hang ((cong thanh) OR (dong thanh)) toan cao".
• Adding a wildcard symbol may retrieve word variants: theo chieu xanh - ((nhan dang) or (nhan dan)) va hang ((cong thanh) OR (dong thanh)) toan cao*.