Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tao doc cua snippets" » "tao duoc cua snippets", "tao boc cua snippets", "tao doi cua snippets", "tao hoc cua snippets", "tao do cua 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: (((("tao doc cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tao doc cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tao doc cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tao doc cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.