Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"tran duoc do snippets" » "tran duoc code snippets", "tranh duoc do snippets", "tran duc do snippets", "tran quoc do snippets", "tran duoc dao snippets", "tran duoc co snippets", "tran duoc vo 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: (((("tran duoc do snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tran duoc do snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( tran duoc do snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tran duoc do snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.