Perhaps you should try some spelling variations:
hieu viec » nhieu viec, hieu ve, sieu viet
viec cho » viec khoa, viec nhom, viec cua
thu sach » thuat sach, thuoc sach, thu hoach
cho duc » cho duoc, ho duc, cao duc
va dinh » van dinh, va kinh, va tinh
va danh » va dan, va hanh, dia danh
tu sach » su sach, te sach, tu cach
nang xa » nang x, lang xa, nang ma
cuu tre » cua tre, cau tren, cau treo
vi cuu » vi luu, vinh cuu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sach) or (thu sach)) ky nang xa hoi. hieu viec cho duc ((va danh) OR (va dinh)) vi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) ky nang xa hoi. hieu viec cho duc ((va danh) OR (va dinh)) vi cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (thu sach)) ky nang xa hoi. hieu viec cho duc ((va danh) OR (va dinh)) vi cuu tre".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thu sach)) ky nang xa hoi. hieu viec cho duc ((va danh) OR (va dinh)) vi cuu tre*.