Perhaps you should try some spelling variations:
te sach » toc sach
sach ky » sac ky, sach y, sach ty
cong cu » chung cu
va kinh » va tinh, qua kinh
va danh » va dinh, va dan, va hanh
cac xuc » cam xuc, cac nuoc, chat xuc
nang xa » lang xa, nang ma, mang xa
hieu ve » hieu va, hieu van
ve cac » va cac, vien cac
cu tre » cu tren, cua tre, cuu tre

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 cac xuc ((va danh) or (va kinh)) cong cu 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 cac xuc ((va danh) OR (va kinh)) cong cu tre.
• Adding a wildcard symbol may retrieve word variants: te sach ky ((nang xa) or (nang x)) hoi. hieu ve cac xuc ((va danh) or (va kinh)) cong cu tre*.