Perhaps you should try some spelling variations:
canh trinh » canh tranh, hanh trinh, canh tinh
tieu xanh » tieu danh, chieu xanh, dieu hanh
tong cong » trong cong, cong cong, dung cong
van thang » van khang, van hang, van than
van thanh » ban thanh, van tuan
trinh va » trinh van, trinh vat, trinh ve
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 tieu xanh - canh trinh va tong cong ((van thang) OR (van thanh)) cap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu xanh - canh trinh va tong cong ((van thang) OR (van thanh)) cap".
• Adding a wildcard symbol may retrieve word variants: theo tieu xanh - canh trinh va tong cong ((van thang) OR (van thanh)) cap*.