Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doi tinh do snippets" » "doi trinh do snippets", "hoi tinh do snippets", "don tinh do snippets", "doi tinh doi snippets", "doi tinh da snippets"
"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: (((("doi tinh do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("doi tinh do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doi tinh do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doi tinh do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.