Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"kim oanh che snippets" » "kim anh che snippets", "kim thanh che snippets", "kieu oanh che snippets", "kim hanh che snippets", "kim doanh cho snippets", "kim doanh chu 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: (((("kim oanh che snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("kim oanh che snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( kim oanh che snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("kim oanh che snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.