Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"tang van cuc snippets" » "tang van code snippets", "dang van cuc snippets", "hoang van cuc snippets", "trong van cuc snippets", "tang van duc snippets", "tang van luc snippets", "tang van cu 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: (((("tang van cuc snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tang van cuc snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( tang van cuc snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tang van cuc snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.