Perhaps you should try some spelling variations:
sach kem » hanh kem
thuc va » thuc vat, thuc dan, thuc day
cuu tre » cua tre, cau tren, cau treo
hieu va » lieu va, hieu qua
lang xa » lang ha, dang xay, lang van
xac va » tac va, ac va, bac va
vi cuu » vi luu, vinh cuu
va dau » va dao

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

• Performing a fuzzy search may retrieve terms with similar spellings: so ((sach kem) or (sach y)) lang xa hoi. hieu va dau ((xac va) or (thuc va)) hanh vi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so ((sach kem) OR (sach y)) lang xa hoi. hieu va dau ((xac va) OR (thuc va)) hanh vi cuu tre.
• Adding a wildcard symbol may retrieve word variants: so ((sach kem) or (sach y)) lang xa hoi. hieu va dau ((xac va) or (thuc va)) hanh vi cuu tre*.