Perhaps you should try some spelling variations:
thanh tai » thanh hai, thanh toan, doanh tai
nam thuc » nam thuoc, am thuc, nam thu
hanh tai » hang tai, han tai, hinh tai
toc sac » toc sach, toc san, hoc sach
thuc va » thuc vat, thuc dan, thuc day
hieu va » lieu va, hieu qua
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
sac ky » cac ky, sai ky
va nam » van nam, ha nam, va nay
cua tu » cua tuc, cua cu, cua te
cua su » qua su

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: toc sac ky lang xa hoi. hieu va nam thuc va ((hanh tai) OR (thanh tai)) ((cua tu) OR (cua su))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sac ky lang xa hoi. hieu va nam thuc va ((hanh tai) or (thanh tai)) ((cua tu) OR (cua su))~".
• Adding a wildcard symbol may retrieve word variants: toc sac ky lang xa hoi. hieu va nam thuc va ((hanh tai) or (thanh tai)) ((cua tu) OR (cua su))*.