Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luong bo so snippets" » "duong bo so snippets", "luong do so snippets", "truong bo so snippets", "luong co so snippets", "luong ho so snippets", "luong bo ho 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: (((("luong bo so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("luong bo so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luong bo so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luong bo so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.