Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phat vu cach snippets" » "phat vi cach snippets", "nhat vu cach snippets", "pham vu cach snippets", "phat va cach snippets", "phat ve cach snippets", "phat vu bach snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core 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: (((("phat vu cach snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phat vu cach snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phat vu cach snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phat vu cach snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.