Perhaps you should try some spelling variations:
"co da chieu snippets" » "co da code snippets", "co dao chieu snippets", "co doi chieu snippets", "co tam chieu snippets", "co dan chieu snippets", "co dai chieu snippets", "co dau chieu snippets"
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"co da chieu snippets\") OR (\"python using java snippets\"))) OR (\"locating bug core snippets\"))~".
• Removing quotes may allow a broader search: (((( co da chieu snippets ) OR ( python using java snippets ))) OR ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("co da chieu snippets") OR ("python using java snippets"))) OR ("locating bug core snippets"))*.