Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
theo chieu » theo tieu, ho chieu, theo chu
cong vang » cong lang, cong quang, cong ngang
vang phan » van phan, nang phan, quang phan
chao chu » cho chu, cua chu, cao cho
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.

• Performing a fuzzy search may retrieve terms with similar spellings: ((theo chieu) or (chao chu)) xanh - canh tranh va thong cong vang phan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (chao chu)) xanh - canh tranh va thong cong vang phan tu.
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (chao chu)) xanh - canh tranh va thong cong vang phan tu*.