Perhaps you should try some spelling variations:
"phi li nghe snippets" » "phi li code snippets", "phi bi nghe snippets", "phi mi nghe snippets", "phi lieu nghe snippets", "phi loi nghe snippets", "phi le nghe snippets", "phi ly nghe 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 ("phi li nghe snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("phi li nghe snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( phi li nghe snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("phi li nghe snippets"))) or ("locating bug core snippets"))*.