Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doanh thu tk slippers" » "doanh tai tk slippers", "doanh thu tu slippers", "doanh thu tk slippery", "doanh thu tk grippers"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("doanh thu tk slippers") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("doanh thu tk slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doanh thu tk slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doanh thu tk slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.