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