Perhaps you should try some spelling variations:
cham xuc » chat xuc, cham soc, pham duc
su sach » so sach, vu sach
nang xa » nang x, nang ma, mang xa
lang xa » lang ha, dang xay, lang van
hieu ve » hieu va, hieu van
va hanh » van hanh, va thanh, va danh
cau tre » cau tren, cau treo, cau tra
vi cau » va cau, ve cau, di cau

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 (lang xa)) hoi. hieu ve ((cham xuc) or (cam xuc)) va hanh vi cau tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y ((nang xa) OR (lang xa)) hoi. hieu ve ((cham xuc) OR (cam xuc)) va hanh vi cau tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y ((nang xa) OR (lang xa)) hoi. hieu ve ((cham xuc) or (cam xuc)) va hanh vi cau tre".
• Adding a wildcard symbol may retrieve word variants: su sach y ((nang xa) OR (lang xa)) hoi. hieu ve ((cham xuc) or (cam xuc)) va hanh vi cau tre*.