Perhaps you should try some spelling variations:
"li cac chien snippets" » "li cac code snippets", "li cuoc chien snippets", "li van chien snippets", "li nam chien snippets", "li ca chien snippets", "ly cac chien snippets", "loi cach chien snippets"
"locating bug core snippets" » "locating bug code snippets"
"python using data snippets" » "python using java snippets", "python using sat snippets", "python missing data snippets"

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 data snippets") or ("li cac chien snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using data snippets") OR ("li cac chien snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( python using data snippets ) or ( li cac chien snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using data snippets") or ("li cac chien snippets"))) or ("locating bug core snippets"))*.