Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
danh du » danh dau, danh tu, dinh du
thuc va » thuc vat, thuc dan, thuc day
truc va » thuc vat, trung va
van dau » van dao, phan dau
nang xa » nang x, lang xa, nang ma
cua tre » cua te, cuu tre, cua triet
sac ky » cac ky, sai ky
du cua » duy cua, dau cua, dum cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu ((sac ky) or (sach y)) nang xa hoi. hieu van dau ((truc va) or (thuc va)) danh du cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu ((sac ky) OR (sach y)) nang xa hoi. hieu van dau ((truc va) OR (thuc va)) danh du cua tre.
• Adding a wildcard symbol may retrieve word variants: thu ((sac ky) or (sach y)) nang xa hoi. hieu van dau ((truc va) or (thuc va)) danh du cua tre*.