Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"van dan bo snippets" » "van dan code snippets", "van ban bo snippets", "ban dan bo snippets", "van dao bo snippets", "van dan bao snippets", "van dan bon snippets", "van can bo 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 dan bo 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 dan bo snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( van dan bo snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van dan bo snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.