Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"than lieu so snippets" » "thanh lieu so snippets", "than dieu so snippets", "thanh liem so snippets", "than hieu so snippets", "than thieu so snippets", "than lieu hoc 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: (((("than lieu 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: (((("than lieu so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( than lieu so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("than lieu so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.