Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"phi hung thi snippets" » "phi thuong thi snippets", "thi huong thi snippets", "thi nhung thi snippets", "phi huong thi snippets", "phi phung thi snippets", "phi hung thai 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: (((("phi hung thi snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phi hung thi snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( phi hung thi snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phi hung thi snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.