Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, tu cach
danh vi » hanh vi, dinh vi, danh di
va danh » va dinh, va dan, va hanh
cua tre » cua te, cuu tre, cua triet
nang xa » nang x, lang xa, nang ma
te sach » toc sach
ve cam » ve cham, ve cac, ve cai
va cam » va cham, va cac, va cao
y nang » ky nang, ly nang, v nang
tuc va » thuc va, truc va, tuc xa
vi cua » vai cua, di cua

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

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