Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"quang dam ve snippets" » "quang nam ve snippets", "quang lam ve snippets", "quang dai ve snippets", "quang dap ve snippets", "quang dau ve snippets", "quang dam me 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: (((("quang dam 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: (((("quang dam ve snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( quang dam ve snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("quang dam ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.