Perhaps you should try some spelling variations:
"locating bugs code slippers" » "locating bugs code snippets", "locating bug code slippers"
"python using java snippets" » "python using data snippets"
"doc anh van snippets" » "doc hanh van snippets", "duoc anh van snippets", "duc anh van snippets", "doc anh va snippets", "doc thanh van snippets", "doc doanh van 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: (((("doc anh van snippets") or ("python using java snippets"))) or ("locating bugs code slippers"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("doc anh van snippets") OR ("python using java snippets"))) OR ("locating bugs code slippers")).
• Removing quotes may allow a broader search: (((( doc anh van snippets ) or ( python using java snippets ))) or ( locating bugs code slippers )).
• Adding a wildcard symbol may retrieve word variants: (((("doc anh van snippets") or ("python using java snippets"))) or ("locating bugs code slippers"))*.