Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
cua triet » cua viet, su triet, va triet
sach ky » sac ky, sach y, sach ty
nang ma » tang ma, sang ma, nang cao
hieu va » lieu va, hieu qua
ma hoi » mai hoi, xa hoi, ma hoa
xuc va » duc va, tuc va, luc va
vi cua » vai cua, di cua
ac va » tac va, bac va, mac va

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat sach ky nang ma hoi. hieu va cac ((((xuc va) or (ac va))) or (tuc xa)) hanh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach ky nang ma hoi. hieu va cac ((((xuc va) OR (ac va))) OR (tuc xa)) hanh vi cua triet.
• Adding a wildcard symbol may retrieve word variants: thuat sach ky nang ma hoi. hieu va cac ((((xuc va) or (ac va))) or (tuc xa)) hanh vi cua triet*.