Perhaps you should try some spelling variations:
cong cua » cong cu, dong cua, huong cua
te sach » toc sach
sach ky » sac ky, sach y, sach ty
va kinh » va tinh, qua kinh
va danh » va dinh, va dan, va hanh
ve chao » ve chat, ve cham, ve cho
hieu ve » hieu va, hieu van
nang xa » lang xa, nang ma, mang xa
cua tre » cua te, cuu tre, cua triet

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 xa) or (nang x)) hoi. hieu ve chao xu ((va danh) or (va kinh)) cong cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky ((nang xa) OR (nang x)) hoi. hieu ve chao xu ((va danh) OR (va kinh)) cong cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach ky ((nang xa) or (nang x)) hoi. hieu ve chao xu ((va danh) or (va kinh)) cong cua tre*.