Perhaps you should try some spelling variations:
"hoc tim cach snippets" » "hoc tim code snippets", "hoc tim mach snippets", "hoc tinh cach snippets", "hoc tu cach snippets", "hoc tam cach snippets", "hoc tin cach snippets", "hoc tieu 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 ("hoc tim 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 ("hoc tim cach snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( hoc tim cach snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("hoc tim cach snippets"))) or ("locating bug core snippets"))*.