Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
ban thanh » ban hanh, ban hang
hieu van » hieu va, thien van, lieu va
mai hoi » mai khoi, dai hoi, lai hoi
van cam » van nam, van lam, van cau
va hanh » van hanh, va thanh, va danh
tu sach » thu sach, su sach, te sach
v nang » va nang, vu nang, van nang
y nang » ky nang, ly nang, may nang
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ((y nang) or (v nang)) mai hoi. hieu van cam xuc ((va hanh) or (ban thanh)) vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((y nang) OR (v nang)) mai hoi. hieu van cam xuc ((va hanh) OR (ban thanh)) vi cua triet.
• Adding a wildcard symbol may retrieve word variants: tu sach ((y nang) or (v nang)) mai hoi. hieu van cam xuc ((va hanh) or (ban thanh)) vi cua triet*.