Perhaps you should try some spelling variations:
nham thuc » nhan thuc, nam thuc, nham thu
pham thuc » phap thuc, pham chuc, pham thu
cua viet » ca viet, hoa viet, cua vat
te sach » toc sach
sach ty » sach y, sach tu, sach thu
xang xa » lang xa, mang xa, ang xa
hieu ve » hieu va, hieu van
va hanh » van hanh, va thanh, va danh
hanh va » hang va, hanh vi
va cua » va chua, via cua, ca 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 ty xang xa hoi. hieu ve ((pham thuc) or (nham thuc)) va hanh va cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty xang xa hoi. hieu ve ((pham thuc) OR (nham thuc)) va hanh va cua viet.
• Adding a wildcard symbol may retrieve word variants: te sach ty xang xa hoi. hieu ve ((pham thuc) or (nham thuc)) va hanh va cua viet*.