Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"sang tac so snippets" » "sang tao so snippets", "sang tai so snippets", "sang than so snippets", "sang tac co snippets", "sang tac su 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: (((("sang tac so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("sang tac so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( sang tac so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("sang tac so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.