Perhaps you should try some spelling variations:
te sach » toc sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
vu cham » va cham, vu kham, tu cham
thuc va » thuc vat, thuc dan, thuc day
va dinh » van dinh, va kinh, va tinh
doi cua » dai cua, hoi cua
di cua » dai cua, de cua, do 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 ((va cac) or (vu cham)) thuc va dinh ((di cua) OR (doi cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang xa hoi. hieu ((va cac) OR (vu cham)) thuc va dinh ((di cua) OR (doi cua)) triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang xa hoi. hieu ((va cac) or (vu cham)) thuc va dinh ((di cua) OR (doi cua)) triet".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang xa hoi. hieu ((va cac) or (vu cham)) thuc va dinh ((di cua) OR (doi cua)) triet*.