Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"van duc ca snippets" » "van duc code snippets", "van duy ca snippets", "van du ca snippets", "tran duc ca snippets", "van duc cac snippets", "van duc va snippets", "van duc ha 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 duc ca 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 duc ca snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( van duc ca snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van duc ca snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.