Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tran nang du snippets" » "tra nang du snippets", "tran dang du snippets", "tran quang du snippets", "tran nang tu snippets", "tran nang luc snippets", "tran nang doc 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: (((("tran nang du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tran nang du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tran nang du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tran nang du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.