Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh va, hanh tai
dang xay » dang van, van xay
te sach » toc sach
vai cua » dai cua, hai cua, lai cua
thuc va » thuc dan, thuc day
hieu va » lieu va, hieu qua
lang xa » lang ha, lang van
cua tuc » cua duc, cua tu, cua thuoc
sach o » sach lo, sac o, sach y
va cam » va cham, va cac, va cao

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

• If you are trying to use Boolean operators, they must be ALL CAPS: te sach o ((lang xa) OR (dang xay)) hoi. hieu va cam ((thuc va) OR (thuc vat)) hanh vai cua tuc~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach o ((lang xa) or (dang xay)) hoi. hieu va cam ((thuc va) OR (thuc vat)) hanh vai cua tuc~".
• Adding a wildcard symbol may retrieve word variants: te sach o ((lang xa) or (dang xay)) hoi. hieu va cam ((thuc va) OR (thuc vat)) hanh vai cua tuc*.