Perhaps you should try some spelling variations:
thien van » thi van
thanh doi » thanh loi, thanh moi, thanh do
toc sach » hoc sach, doc sach, thuoc sach
thuc dat » thuc dan, thuc day, thue dat
cua viet » ca viet, hoa viet, cua vat
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
doi cua » dai cua, hoi cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach ky nang xa hoi. thien van nam ((thuc dat) OR (thuc vat)) thanh doi cua viet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ky nang xa hoi. thien van nam ((thuc dat) OR (thuc vat)) thanh doi cua viet".
• Adding a wildcard symbol may retrieve word variants: toc sach ky nang xa hoi. thien van nam ((thuc dat) OR (thuc vat)) thanh doi cua viet*.