Perhaps you should try some spelling variations:
thu sach » thuat sach, thuoc sach, thu hoach
va cham » va chat, va tham
tu sach » su sach, te sach, tu cach
danh vi » hanh vi, dinh vi, danh di
va danh » va dinh, va dan, va hanh
nang xa » nang x, lang xa, nang ma
vi cua » vai cua, di cua
tuc va » thuc va, truc va, tuc xa
va cai » va cac, va bai, va dai
v nang » va nang, vu nang, van nang
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thu sach) OR (tu sach)) v nang xa hoi. hieu ((va cai) or (va cham)) tuc va danh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (tu sach)) v nang xa hoi. hieu ((va cai) OR (va cham)) tuc va danh vi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu sach) OR (tu sach)) v nang xa hoi. hieu ((va cai) or (va cham)) tuc va danh vi cua te".
• Adding a wildcard symbol may retrieve word variants: ((thu sach) OR (tu sach)) v nang xa hoi. hieu ((va cai) or (va cham)) tuc va danh vi cua te*.