Perhaps you should try some spelling variations:
hieu viec » nhieu viec, hieu ve, sieu viet
ban thuoc » dang thuoc, cay thuoc, nam thuoc
ban nuoc » ban duoc, ban nuoi, luan nuoc
danh tu » anh tu, doanh thu
va danh » va dinh, va dan, va hanh
sach ky » sach y, sach ty, sach kem
lang xa » lang ha, dang xay, lang van
cua tre » cua te, cuu tre, cua triet
sac ky » cac ky, sai ky
tu cua » hu cua, vu cua

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: so ((sach ky) OR (sac ky)) lang xa hoi. hieu viec ((ban nuoc) OR (ban thuoc)) va danh tu cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so ((sach ky) OR (sac ky)) lang xa hoi. hieu viec ((ban nuoc) or (ban thuoc)) va danh tu cua tre~".
• Adding a wildcard symbol may retrieve word variants: so ((sach ky) OR (sac ky)) lang xa hoi. hieu viec ((ban nuoc) or (ban thuoc)) va danh tu cua tre*.