Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thu anh code snippets" » "thu anh co snippets", "thu anh cong snippets", "thuy anh code snippets", "thu canh code snippets", "thu oanh code snippets"
"locating bug code slippers" » "locating bung code slippers", "locating bugs code slippers"

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: (((("thu anh code snippets") or ("python using java snippets"))) or ("locating bug code slippers"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thu anh code snippets") OR ("python using java snippets"))) OR ("locating bug code slippers")).
• Removing quotes may allow a broader search: (((( thu anh code snippets ) or ( python using java snippets ))) or ( locating bug code slippers )).
• Adding a wildcard symbol may retrieve word variants: (((("thu anh code snippets") or ("python using java snippets"))) or ("locating bug code slippers"))*.