Perhaps you should try some spelling variations:
"phi van hoai snippets" » "phi van code snippets", "phi van thoai snippets", "phi van hoa snippets", "phi van hai snippets", "phi san hoai snippets", "thi van hoai snippets", "phi va hoai 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 van hoai 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 van hoai snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( phi van hoai snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("phi van hoai snippets"))) or ("locating bug core snippets"))*.