Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"van luc can snippets" » "van luc code snippets", "van loc can snippets", "van duc can snippets", "van lu can snippets", "van luc canh snippets", "van luoc can snippets", "van luc cao 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 luc can 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 luc can snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( van luc can snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van luc can snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.