Perhaps you should try some spelling variations:
"hen dan cach snippets" » "hen dan code snippets", "hen dan cac snippets", "hen dan canh snippets", "hen nhan cach snippets", "he dan cach snippets", "nen dan cach snippets", "phen dang cach snippets"
"locating bug core snippets" » "locating bug code 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 ("hen dan cach snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("hen dan cach snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( hen dan cach snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("hen dan cach snippets"))) or ("locating bug core snippets"))*.