Perhaps you should try some spelling variations:
"dao duc ham slippers" » "dao duc ham slices", "giao duc ham slippers", "tao duoc ham slippers", "dao duc pham slippers", "dao duc kham slippers", "dao duc tham 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: (((("python using java snippets") or ("dao duc ham slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("dao duc ham slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( dao duc ham slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("dao duc ham slippers"))) or ("locating bug code snippets"))*.