Perhaps you should try some spelling variations:
"tran quoc java snippets" » "trung quoc java snippets", "han quoc java snippets", "tran duc java snippets", "tran quoc va snippets", "tran quoc java slippers"
"python using lc snippets" » "python using c snippets", "python using l snippets", "python using low snippets", "python using lc slippers"
"locating bug code snippets" » "locating bug code slippers", "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: (((("python using lc snippets") or ("tran quoc java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using lc snippets") OR ("tran quoc java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( python using lc snippets ) or ( tran quoc java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using lc snippets") or ("tran quoc java snippets"))) or ("locating bug code snippets"))*.