Perhaps you should try some spelling variations:
sach nuoc » sach duoc, cac nuoc, dich nuoc
hieu viec » nhieu viec, sieu viet, hieu hien
bach tuoc » sach duoc
vu khach » vu khanh, vu khac, vay khach
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
va danh » va dinh, va dan, va hanh
danh di » danh du, xanh di, danh dien
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
di cua » dai cua, doi cua, de cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu khach y nang xa hoi. ((hieu viec) or (hieu ve)) ((sach nuoc) OR (bach tuoc)) va danh di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu khach y nang xa hoi. ((hieu viec) OR (hieu ve)) ((sach nuoc) OR (bach tuoc)) va danh di cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu khach y nang xa hoi. ((hieu viec) or (hieu ve)) ((sach nuoc) OR (bach tuoc)) va danh di cua tre".
• Adding a wildcard symbol may retrieve word variants: vu khach y nang xa hoi. ((hieu viec) or (hieu ve)) ((sach nuoc) OR (bach tuoc)) va danh di cua tre*.