Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"van du long snippets" » "van du code snippets", "van duc long snippets", "van du luong snippets", "van do long snippets", "van duy long snippets", "van dau long snippets", "van de long 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: (((("python using java snippets") or ("van du long snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("van du long snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( van du long snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("van du long snippets"))) or ("locating bug core snippets"))*.