Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dang lieu so snippets" » "dang dieu so snippets", "dan lieu so snippets", "dang tieu so snippets", "dang hieu so snippets", "dang thieu so snippets", "dang lieu hoc 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: (((("dang lieu so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dang lieu so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dang lieu so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dang lieu so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.