Perhaps you should try some spelling variations:
"python using real snippets" » "python using metal snippets", "python using raw snippets"
"van ban hanh slippers" » "van ban hang slippers", "van ban hanh slippery", "van ban hanh grippers"
"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 real snippets") or ("van ban hanh slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using real snippets") OR ("van ban hanh slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( python using real snippets ) or ( van ban hanh slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using real snippets") or ("van ban hanh slippers"))) or ("locating bug code snippets"))*.