Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"tran vu du snippets" » "tran vu code snippets", "tran tu du snippets", "tran van du snippets", "trang va du snippets", "tran vu duc snippets", "tran vu duy snippets", "tran va du 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: (((("tran vu du snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tran vu du snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( tran vu du snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tran vu du snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.