Perhaps you should try some spelling variations:
thanh dao » thanh dat, thanh dam, thanh do
nang cau » nang cao, hang cau, nang dau
va thanh » gia thanh, ban thanh, va tinh
so sach » so sanh, bo sach, co sach
sach ky » sac ky, sach y, sach ty
van cam » van nam, van lam, van dam
van cau » van dau, van hau, van chat
dao cua » dai cua, day cua, dan cua
cua te » cua tu

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 cau hoi. thien ((van cam) OR (van cau)) duc va thanh dao cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ky nang cau hoi. thien ((van cam) OR (van cau)) duc va thanh dao cua te".
• Adding a wildcard symbol may retrieve word variants: so sach ky nang cau hoi. thien ((van cam) OR (van cau)) duc va thanh dao cua te*.