Perhaps you should try some spelling variations:
cau tren » cu tren, dau tren, ca tren
cham xuc » chat xuc, cham soc, pham duc
hanh ve » hanh vi, hanh va, hanh kem
va hanh » van hanh, va thanh, va danh
hieu ve » hieu va, hieu van
so sach » so sanh, bo sach, co sach
nang xa » lang xa, nang ma, mang xa
ve cau » ke cau, va cau, ve cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach y ((nang xa) or (nang x)) hoi. hieu ve ((cham xuc) or (cam xuc)) va hanh ve cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach y ((nang xa) OR (nang x)) hoi. hieu ve ((cham xuc) OR (cam xuc)) va hanh ve cau tren.
• Adding a wildcard symbol may retrieve word variants: so sach y ((nang xa) or (nang x)) hoi. hieu ve ((cham xuc) or (cam xuc)) va hanh ve cau tren*.