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