Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"chu dan toan snippets" » "chu dan code snippets", "chu van toan snippets", "chu dan than snippets", "chu manh toan snippets", "chua dan toan snippets", "chu han toan 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: (((("chu dan toan snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("chu dan toan snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( chu dan toan snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chu dan toan snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.