Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
thien van » thi van
nham thuc » nhan thuc, nam thuc, nham thu
cua triet » cua viet, su triet, va triet
lang van » dang van, tang van, hoang van
van nham » van nam, van nhan, van tham
dinh dau » dinh dat, dinh du, danh dau
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
thuc xa » thuc xay, tuc xa, thuc va
xa dinh » xac dinh, va dinh, ba dinh
dau cua » dai cua, day cua, cau cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuoc sach ky ((nang xa) or (lang van)) hoi. thien van nham thuc xa dinh dau cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach ky ((nang xa) OR (lang van)) hoi. thien van nham thuc xa dinh dau cua triet.
• Adding a wildcard symbol may retrieve word variants: thuoc sach ky ((nang xa) or (lang van)) hoi. thien van nham thuc xa dinh dau cua triet*.