Perhaps you should try some spelling variations:
"thi lan dong snippets" » "thi lan code snippets", "thi lang dong snippets", "thi luan dong snippets", "thi van dong snippets", "thi hanh dong snippets", "thi nang dong snippets", "thi lien dong 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 ("thi lan dong snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("thi lan dong snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( thi lan dong snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("thi lan dong snippets"))) or ("locating bug core snippets"))*.