Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"van muc chat snippets" » "van muc code snippets", "van duoc chat snippets", "van luc nhat snippets", "van hoc chat snippets", "van duc chat snippets", "van luc chat snippets", "va muc chat 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 muc chat 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 muc chat snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( van muc chat snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van muc chat snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.