Perhaps you should try some spelling variations:
"tang ca chap snippets" » "tang ca code snippets", "tang cua chap snippets", "hang ca chap snippets", "tang ma chap snippets", "tang cau chap snippets", "tang ca cham snippets", "tang ca chep snippets"
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data 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: (((("python using java snippets") or ("tang ca chap snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("tang ca chap snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( tang ca chap snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("tang ca chap snippets"))) or ("locating bug core snippets"))*.