Perhaps you should try some spelling variations:
"pham cac ham slippers" » "pham cac ham slices", "phan cac ham slippers", "pham ca ham slippers", "pham can ham slippers", "pham cac cam slippers", "pham cac hat slippers", "pham cac nhan slippers"
"python using java snippets" » "python using data 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: (((("pham cac ham slippers") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("pham cac ham slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( pham cac ham slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("pham cac ham slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.