Perhaps you should try some spelling variations:
"nhe cau cham snippets" » "nhe cau code snippets", "nhe ca cham snippets", "nhe cau chan snippets", "nhe cau chap snippets", "nhu cau cham snippets", "nhe cac cham snippets", "nhieu cau cham 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: (((("python using java snippets") or ("nhe cau cham snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("nhe cau cham snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( nhe cau cham snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("nhe cau cham snippets"))) or ("locating bug core snippets"))*.