Perhaps you should try some spelling variations:
tranh hoa » thanh hoa, trinh hoa, tranh ha
dang cong » dung cong
chi tinh » chai tinh, chi minh, chi binh
hoa dang » khoa dang, hoa dan, hoa lang
dan than » ban than, van than, dan toan
dan chan » dan gian, dan ca, van chat
doi chi » doi khi

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chi tinh - canh tranh hoa dang cong ((dan than) or (dan chan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chi tinh - canh tranh hoa dang cong ((dan than) OR (dan chan)) cau.
• Adding a wildcard symbol may retrieve word variants: doi chi tinh - canh tranh hoa dang cong ((dan than) or (dan chan)) cau*.