Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh dat
lang van » dang van, tang van, hoang van
va thanh » gia thanh, ban thanh, va tinh
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
cam duc » cam xuc, cao duc, pham duc
cua tre » cua te, cua triet, dua tren
cuu tre » cau tren, cau treo
va cam » va cham, va cac, va cao

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

• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky ((nang xa) OR (lang van)) hoi. lieu va cam duc va thanh dai ((cua tre) OR (cuu tre))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky ((nang xa) or (lang van)) hoi. lieu va cam duc va thanh dai ((cua tre) OR (cuu tre))~".
• Adding a wildcard symbol may retrieve word variants: su sach ky ((nang xa) or (lang van)) hoi. lieu va cam duc va thanh dai ((cua tre) OR (cuu tre))*.