Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using sat snippets" » "python using data snippets", "python using a snippets", "python using raw snippets"
"trieu do bien snippets" » "trien do bien snippets", "trieu dai bien snippets", "trien dot bien snippets", "trieu doi bien snippets", "trieu dot bien snippets", "trieu so bien 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: (((("trieu do bien snippets") or ("python using sat snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trieu do bien snippets") OR ("python using sat snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( trieu do bien snippets ) or ( python using sat snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trieu do bien snippets") or ("python using sat snippets"))) or ("locating bug core snippets"))*.