Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cham minh de snippets" » "pham minh de snippets", "cham binh de snippets", "cham tinh de snippets", "cham minh ve snippets", "cham sinh de snippets", "cham menh de snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core 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: (((("cham minh de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cham minh de snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cham minh de snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cham minh de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.