Perhaps you should try some spelling variations:
"de da chieu snippets" » "de da code snippets", "de dao chieu snippets", "de doi chieu snippets", "de tam chieu snippets", "de dat chieu snippets", "de dan chieu 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.

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