Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"rap da viet snippets" » "rap dao viet snippets", "rap dai viet snippets", "rap dan viet snippets", "cap da viet snippets", "lap da viet snippets", "rap va viet snippets", "rap da viet 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: (((("rap da viet snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("rap da viet snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( rap da viet snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("rap da viet snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.