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

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 (luc va))) or (thuc va)) thanh di 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 (luc va))) OR (thuc va)) thanh di 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 (luc va))) or (thuc va)) thanh di cuu tre".
• Adding a wildcard symbol may retrieve word variants: so sanh y dang ha hoi. hieu van cam ((((xuc va) OR (luc va))) or (thuc va)) thanh di cuu tre*.