Perhaps you should try some spelling variations:
"thuc cao cong snippets" » "thuc cao code snippets", "thuoc cao cong snippets", "thuc co cong snippets", "thuc can cong snippets", "thuc cac cong snippets", "thuc cao dang snippets", "thuc cua cong snippets"
"locating bug core snippets" » "locating bug code snippets"
"python using low snippets" » "python using code 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 low snippets") or ("thuc cao cong snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using low snippets") OR ("thuc cao cong snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( python using low snippets ) or ( thuc cao cong snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using low snippets") or ("thuc cao cong snippets"))) or ("locating bug core snippets"))*.