Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lan long cua snippets" » "van long cua snippets", "lai long cua snippets", "lan lang cua snippets", "lan luong cua snippets", "lan cong cua snippets", "lan dong 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: (((("lan long 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: (((("lan long cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lan long cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lan long cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.