Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cuu cong son snippets" » "cua cong son snippets", "thu cong son snippets", "cac cong son snippets", "cuu cong san snippets", "cuu cong so snippets", "cuu dong son 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: (((("cuu cong son snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cuu cong son snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cuu cong son snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cuu cong son snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.