Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"duc hanh du snippets" » "duc hanh code snippets", "duc thanh du snippets", "duc anh du snippets", "du hanh du snippets", "duc hanh dua snippets", "duc hanh tu snippets", "duc hanh de 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: (((("duc hanh 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: (((("duc hanh du snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( duc hanh du snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duc hanh du snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.