Perhaps you should try some spelling variations:
thanh cac » hanh cac, thanh bac, thanh ca
cua triet » cua viet, su triet, va triet
chau phu » chau phi, chau tho, cho phu
va thanh » gia thanh, ban thanh, va tinh
so sach » so sanh, bo sach, co sach
sach ky » sac ky, sach y, sach ty
cao hoi » cau hoi, co hoi, cao hoc
hieu va » lieu va, hieu qua
cac cua » cach cua, cac qua, ca cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ky nang cao hoi. hieu va ((((chau phu) or (chau au))) or (cau thi)) va thanh cac cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ky nang cao hoi. hieu va ((((chau phu) OR (chau au))) OR (cau thi)) va thanh cac cua triet.
• Adding a wildcard symbol may retrieve word variants: so sach ky nang cao hoi. hieu va ((((chau phu) or (chau au))) or (cau thi)) va thanh cac cua triet*.