Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
cua triet » cua viet, su triet
va triet » va thiet, va trien, ve triet
nhan cuu » nhan cua, nhan cuoc, nghen cuu
van anh » van thanh, tuan anh, van minh
tu sach » thu sach, su sach, te sach
hieu va » lieu va, hieu qua
va nhan » van nhan, ca nhan, va phan
anh vi » hanh vi, anh va, anh ve
x hoi » xa hoi, o hoi, x ho

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) or (thuat sach)) ky nang x hoi. hieu va nhan cuu van anh vi ((cua triet) OR (va triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thuat sach)) ky nang x hoi. hieu va nhan cuu van anh vi ((cua triet) OR (va triet))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (thuat sach)) ky nang x hoi. hieu va nhan cuu van anh vi ((cua triet) OR (va triet))*".