Perhaps you should try some spelling variations:
"cu cac chieu snippets" » "cu cac code snippets", "cu cac chien snippets", "cu cao hieu snippets", "cu cac che snippets", "cua cac chieu snippets", "cuu cac chieu snippets", "cu cao chieu 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: (((("cu cac chieu snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cu cac chieu snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( cu cac chieu snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cu cac chieu snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.