Perhaps you should try some spelling variations:
thanh de » hanh de, thanh ve, thanh do
thanh di » thanh doi, thanh do, thanh dinh
hieu van » hieu va, thien van, lieu va
so sanh » do sanh
thuc va » thuc vat, thuc dan, thuc day
cuu tre » cua tre, cau tren, cau treo
dang ha » dong ha, dung ha, lang ha
van cam » van nam, van lam, van cau
sanh y » sinh y, anh y, hanh y
xuc va » duc va, tuc va, luc va
ha hoi » hoa hoi, ha noi, xa hoi
y dang » ky dang, 2 dang, _ dang

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sanh y dang ha hoi. hieu van cam ((xuc va) or (thuc va)) ((thanh di) OR (thanh de)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sanh y dang ha hoi. hieu van cam ((xuc va) OR (thuc va)) ((thanh di) OR (thanh de)) cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sanh y dang ha hoi. hieu van cam ((xuc va) or (thuc va)) ((thanh di) OR (thanh de)) cuu tre".
• Adding a wildcard symbol may retrieve word variants: so sanh y dang ha hoi. hieu van cam ((xuc va) or (thuc va)) ((thanh di) OR (thanh de)) cuu tre*.