Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"doan tu doi snippets" » "doan tu code snippets", "doan thu doi snippets", "dan tu doi snippets", "toan tu doi snippets", "doan tu do snippets", "doan te doi snippets", "doan tu di snippets"
"python using java snippets" » "python using data 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: (((("doan tu doi snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("doan tu doi snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( doan tu doi snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doan tu doi snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.