Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
theo chieu » theo tieu, ho chieu, theo chu
thiet yeu » thiet ke
cong vang » cong lang, cong quang, cong ngang
vang phan » van phan, nang phan, quang phan
theo yeu » theo tieu, theo chu
tranh va » tranh van, trang va, trinh va
va thong » va thuong, va phuong, he thong

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 (((theo yeu) OR (thiet yeu)))) xanh - canh tranh va thong cong vang phan tu~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chieu) or (((theo yeu) OR (thiet yeu)))) xanh - canh tranh va thong cong vang phan tu~".
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (((theo yeu) OR (thiet yeu)))) xanh - canh tranh va thong cong vang phan tu*.