Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
danh dao » doanh dao, lanh dao, danh dau
thuc va » thuc vat, thuc dan, thuc day
va danh » va dinh, va dan, va hanh
dao cua » dai cua, day cua, dan cua
nang o » nang co, nang ho, nang ro
van am » van nam, van lam, van dam
o hoc » co hoc, mo hoc, so hoc

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu cac ky nang o hoc. hieu van am thuc va danh dao cua vat~.
• Adding a wildcard symbol may retrieve word variants: tu cac ky nang o hoc. hieu van am thuc va danh dao cua vat*.