Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
cham xuc » chat xuc, cham soc, pham duc
su sach » so sach, vu sach
hanh ve » hanh vi, hanh va, hanh kem
hieu ve » hieu va, hieu van
nang xa » lang xa, nang ma, mang xa
cau tre » cau tren, cau treo, cau tra
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: su sach y ((nang xa) or (nang x)) hoi. hieu ve ((cham xuc) or (cam xuc)) van hanh ve cau tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y ((nang xa) OR (nang x)) hoi. hieu ve ((cham xuc) OR (cam xuc)) van hanh ve cau tre.
• Adding a wildcard symbol may retrieve word variants: su sach y ((nang xa) or (nang x)) hoi. hieu ve ((cham xuc) or (cam xuc)) van hanh ve cau tre*.