Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"van phan moi snippets" » "van phan code snippets", "van phong moi snippets", "van thanh moi snippets", "luan phan moi snippets", "van phan mo snippets", "van pham moi snippets", "van phan hoi 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: (((("van phan moi snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("van phan moi snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( van phan moi snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van phan moi snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.