Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"giang vo he snippets" » "giang o he snippets", "giang ve he snippets", "giang van he snippets", "giang do he snippets", "giang so he snippets", "giang va he snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core 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: (((("giang vo he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("giang vo he snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( giang vo he snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("giang vo he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.