Perhaps you should try some spelling variations:
regional tfp » regional tax, regional trips, regional ties
5a regional » a regional, ida regional, via regional
dan yang » daun yang, tan yang, wang yang
tan ying » fan ying, ran ying, tan yang
dong di » dong sin
y 5a » y la, y a, _ 5a
wang » wing, wan

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((wang or lang) yan) or (dong di)) y 5a regional tfp ((dan yang) or (tan ying)) hai ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((wang OR lang) yan) OR (dong di)) y 5a regional tfp ((dan yang) OR (tan ying)) hai ;.
• Adding a wildcard symbol may retrieve word variants: (((wang or lang) yan) or (dong di)) y 5a regional tfp ((dan yang) or (tan ying)) hai ;*.