Perhaps you should try some spelling variations:
"python using java slippers" » "python using data slippers", "python using java slippery"
"can van anh grippers" » "cac van anh grippers", "can ban anh grippers", "tan van anh grippers", "can van thanh grippers", "can van minh grippers", "can tuan anh 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: (((("can van anh grippers") or ("python using java slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("can van anh grippers") OR ("python using java slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( can van anh grippers ) or ( python using java slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("can van anh grippers") or ("python using java slippers"))) or ("locating bug code snippets"))*.