Perhaps you should try some spelling variations:
"doi quy cham snippets" » "doi quy code snippets", "doi quy chau snippets", "doi quy pham snippets", "doi qua cham snippets", "dot quy cham snippets", "doi duy cham snippets", "noi quy 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 ("doi quy 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 ("doi quy cham snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( doi quy cham snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("doi quy cham snippets"))) or ("locating bug core snippets"))*.