Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
thanh hoa » thanh pho
su sach » so sach, vu sach
truc va » thuc va, thuc vat, trung va
cuu tre » cua tre, cau tren, cau treo
sach ty » sach y, sach tu, sach thu
va cham » va chat, va tham
hieu va » lieu va, hieu qua
tang ma » mang may, tang van
ty tang » tay tang, ty xang, ty hang
tuc va » thuc va, tuc xa, duc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ty tang ma hoa. hieu va cham ((tuc va) OR (truc va)) ((thanh vai) or (thanh hoa)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty tang ma hoa. hieu va cham ((tuc va) OR (truc va)) ((thanh vai) OR (thanh hoa)) cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty tang ma hoa. hieu va cham ((tuc va) OR (truc va)) ((thanh vai) or (thanh hoa)) cuu tre".
• Adding a wildcard symbol may retrieve word variants: su sach ty tang ma hoa. hieu va cham ((tuc va) OR (truc va)) ((thanh vai) or (thanh hoa)) cuu tre*.