Perhaps you should try some spelling variations:
"so noi chieu snippets" » "so noi code snippets", "so doi chieu snippets", "so ho chieu snippets", "so thi chieu snippets", "soi noi chieu snippets", "bo noi chieu snippets", "o noi 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: (((("so noi 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: (((("so noi chieu snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( so noi chieu snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("so noi chieu snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.