Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khoi thuy ve snippets" » "khoa thuy ve snippets", "khoi thuat ve snippets", "thi thuy ve snippets", "khoi thuc ve snippets", "khoi thuy vu snippets", "khoi thuyet ve 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: (((("khoi thuy ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khoi thuy ve snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khoi thuy ve snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khoi thuy ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.