Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
ban thanh » ban hanh, ban hang
nang tai » hang tai, tang tai, sang tai
tai khoa » da khoa, noi khoa
te sach » toc sach
dua ban » dia ban, cua ban, qua ban
vai cua » dai cua, hai cua, lai cua
cua tre » cua te, cuu tre, cua triet
sach ky » sac ky, sach y, sach ty
ve cam » ve cham, ve cac, va cam
va cao » va cac, va dao, va bao
va co » vo co

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 ky nang tai khoa. hieu ((ve cam) or (((va cao) OR (va co)))) dua ban thanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang tai khoa. hieu ((ve cam) OR (((va cao) OR (va co)))) dua ban thanh vai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang tai khoa. hieu ((ve cam) or (((va cao) OR (va co)))) dua ban thanh vai cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang tai khoa. hieu ((ve cam) or (((va cao) OR (va co)))) dua ban thanh vai cua tre*.