Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"van khoe con snippets" » "van khoe code snippets", "van hoe con snippets", "van khoa con snippets", "van kho con snippets", "van khoe cong snippets", "van khoa cong snippets", "van khong con 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 khoe con 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 khoe con snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( van khoe con snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("van khoe con snippets"))) or ("locating bug core snippets"))*.