Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"pho hai cach snippets" » "pho cai cach snippets", "pho hao cach snippets", "pho nhan cach snippets", "pho ha cach 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: (((("pho hai 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: (((("pho hai cach snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( pho hai cach snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("pho hai cach snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.