Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"van hoi long snippets" » "van hoi code snippets", "van hoi luong snippets", "van hai long snippets", "van hoi lang snippets", "van choi long snippets", "van hoai long snippets", "van khoi long 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 hoi long 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 hoi long snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( van hoi long snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van hoi long snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.