Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh va, hanh tai
cau tren » cu tren, ca tren, cau treo
dau tren » dau tien, dat tren, dau tieng
su sach » so sach, vu sach
ky tang » ky dang, kho tang, ky trong
mai hoi » mai khoi, dai hoi, lai hoi
hieu ve » hieu va, hieu van
va hanh » van hanh, va thanh, va danh
ve cam » ve cham, ve cac, va cam
xuc va » duc va, tuc va, luc va

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