Perhaps you should try some spelling variations:
thanh vi » hanh vi, thanh va, thanh ve
va thanh » gia thanh, ban thanh, va tinh
vu sach » vu bach, su sach, vu khach
sach ky » sac ky, sach y, sach ty
chuc va » thuc va, thuc vat
va chat » van chat, va phat, cao chat
cuu tre » cua tre, cau tren, cau treo
va chai » va cai, va cham, va chi
nang ma » tang ma, sang ma, nang cao
nang xa » nang x, lang xa, mang xa
vi cuu » vi luu, vinh cuu

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach ky ((nang xa) or (nang ma)) hoi. lieu ((va chai) OR (va chat)) chuc va thanh vi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ky ((nang xa) OR (nang ma)) hoi. lieu ((va chai) OR (va chat)) chuc va thanh vi cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ky ((nang xa) or (nang ma)) hoi. lieu ((va chai) OR (va chat)) chuc va thanh vi cuu tre".
• Adding a wildcard symbol may retrieve word variants: vu sach ky ((nang xa) or (nang ma)) hoi. lieu ((va chai) OR (va chat)) chuc va thanh vi cuu tre*.