Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"van luc doc snippets" » "van luc code snippets", "van loc doc snippets", "van duc doc snippets", "van lu doc snippets", "van luc hoc snippets", "van luc doi snippets", "van luc dich snippets"
"python using java snippets" » "python using data 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: (((("van luc doc snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("van luc doc snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( van luc doc snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van luc doc snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.