Perhaps you should try some spelling variations:
bach tuoc » sach duoc, sach nuoc
hieu viec » nhieu viec, sieu viet, hieu hien
su sach » so sach, vu sach
hieu ve » hieu va, hieu van
danh di » danh du, xanh di, danh dien
va danh » va dinh, va dan, va hanh
tuoc va » thuoc va, nuoc va, duoc va
cuu tre » cua tre, cau tren, cau treo
sach ky » sac ky, sach y, sach ty
lang xa » lang ha, dang xay, lang van
nang xa » nang x, nang ma, mang xa
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: su sach ky ((nang xa) OR (lang xa)) hoi. ((hieu viec) or (hieu ve)) bach tuoc va danh di cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky ((nang xa) OR (lang xa)) hoi. ((hieu viec) OR (hieu ve)) bach tuoc va danh di cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky ((nang xa) OR (lang xa)) hoi. ((hieu viec) or (hieu ve)) bach tuoc va danh di cuu tre".
• Adding a wildcard symbol may retrieve word variants: su sach ky ((nang xa) OR (lang xa)) hoi. ((hieu viec) or (hieu ve)) bach tuoc va danh di cuu tre*.