Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
canh trinh » canh tranh, hanh trinh, canh tinh
tieu xanh » tieu danh, chieu xanh, tien anh
trinh va » trinh van, trinh vat, trinh ve
cong van » cong vang, cong san, song van
van tuan » van quan, van ban, anh tuan
tuan tu » tuan thu, tran tu, toan tu

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) or (dieu hanh)) - canh trinh va nhung cong van tuan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((tieu xanh) OR (dieu hanh)) - canh trinh va nhung cong van tuan tu*.