Perhaps you should try some spelling variations:
thuc dan » thuc hanh, hoc dan, thuc vat
cua viet » ca viet, hoa viet, cua vat
ve chat » va chat, van chat
sach ky » sac ky, sach y, sach ty
thuc va » thuc vat, thuc day
nang xa » nang x, lang xa, nang ma
danh di » danh du, xanh di, danh dien
te sach » toc sach
ve cam » ve cham, ve cac, va cam
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: te sach ky nang xa hoi. hieu ((ve cam) or (ve chat)) ((thuc va) OR (thuc dan)) danh di cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang xa hoi. hieu ((ve cam) OR (ve chat)) ((thuc va) OR (thuc dan)) danh di cua viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang xa hoi. hieu ((ve cam) or (ve chat)) ((thuc va) OR (thuc dan)) danh di cua viet".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang xa hoi. hieu ((ve cam) or (ve chat)) ((thuc va) OR (thuc dan)) danh di cua viet*.