Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"toc pha du snippets" » "toc pha code snippets", "toc pa du snippets", "toc phu du snippets", "toc ha du snippets", "toc pham duc snippets", "toc pham duy snippets", "toc phan duc 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: (((("toc pha du snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("toc pha du snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( toc pha du snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("toc pha du snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.