Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"gian nan cua snippets" » "gian dan cua snippets", "gian lan cua snippets", "gian van cua snippets", "gian nhan cua snippets", "gian ban cua snippets", "gian nam 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: (((("gian nan 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: (((("gian nan cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( gian nan cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("gian nan cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.