Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
cau tren » cu tren, dau tren, ca tren
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va, hieu van
va dinh » van dinh, va kinh, va tinh
dinh da » dinh dat, dinh dao, tinh da
ma hoi » mai hoi, ma hoa, me hoi
xuc va » duc va, tuc va, luc va
da cau » dat cau, va cau

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

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