Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"don hai cua snippets" » "dong hai cua snippets", "doan hai cua snippets", "son hai cua snippets", "don thai cua snippets", "don hoi cua snippets", "don dai 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: (((("don hai 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: (((("don hai cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( don hai cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("don hai cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.