Perhaps you should try some spelling variations:
"mon ho c." » "mon co c." (Expand Search), "mon khoa c." (Expand Search), "mong hoa c." (Expand Search), "mon heo c." (Expand Search), "mon _o c." (Expand Search), "kon ho c." (Expand Search), "mon ho co." (Expand Search), "mon ho uc." (Expand Search), "mon ho o." (Expand Search)
"mon hoc c." » "mon coc c." (Expand Search), "mon khoac c." (Expand Search), "mong hoac c." (Expand Search), "mon heoc c." (Expand Search), "mon _oc c." (Expand Search), "kon hoc c." (Expand Search), "mon hoc co." (Expand Search), "mon hoc ca." (Expand Search), "mon hoc ac." (Expand Search)
"mon h c." » "mon he c." (Expand Search), "mon _ c." (Expand Search), "kon h c." (Expand Search)

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: (((("mon h c.") OR ("mon ho c."))) OR ("mon hoc c."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"mon h c.\") OR (\"mon ho c.\"))) OR (\"mon hoc c.\"))".
• Removing quotes may allow a broader search: (((( mon h c. ) OR ( mon ho c. ))) OR ( mon hoc c. )).
• Adding a wildcard symbol may retrieve word variants: (((("mon h c.") OR ("mon ho c."))) OR ("mon hoc c."))*.