Perhaps you should try some spelling variations:
canh trinh » canh tranh, hanh trinh, canh tinh
thieu xanh » chieu xanh, hieu manh, thien danh
thien anh » thien danh, tien anh, thien thanh
van hoang » van hoan, quan hoang, tran hoang
van hang » van khang, van thang, ban hang
cong san » cong tac
san phan » san pham, van phan, sat phan
phan cac » nhan cach, phan dau, phan lap

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thieu xanh) OR (thien anh)) - canh trinh ((van hang) or (van hoang)) cong san phan cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (thien anh)) - canh trinh ((van hang) OR (van hoang)) cong san phan cac.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu xanh) OR (thien anh)) - canh trinh ((van hang) or (van hoang)) cong san phan cac".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) OR (thien anh)) - canh trinh ((van hang) or (van hoang)) cong san phan cac*.