Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
sach ty » sach y, sach tu, sach thu
truc va » thuc va, thuc vat, trung va
vu cham » va cham, vu kham, tu cham
ve cham » va cham, ve chat, ve chim
ty nang » ky nang, ty xang, ty hang
cua tre » cua te, cuu tre, cua triet
tuc va » thuc va, tuc xa, duc va
vi cua » vai cua, di cua
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat sach ty nang x hoi. hieu ((ve cham) or (vu cham)) ((tuc va) OR (truc va)) hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach ty nang x hoi. hieu ((ve cham) OR (vu cham)) ((tuc va) OR (truc va)) hanh vi cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sach ty nang x hoi. hieu ((ve cham) or (vu cham)) ((tuc va) OR (truc va)) hanh vi cua tre*".