Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thu hanh » thuc hanh, thu thanh, thuy hanh
cam thuc » am thuc, nam thuc, can thuc
sach thu » sach thue, sach thieu, sach tham
hanh lam » thanh lap, hanh kem, hanh va
tu sach » thu sach, su sach, te sach
hanh xa » hanh va, hanh ma, hanh xu
hieu ve » hieu va, hieu van
cam thu » nam thu, cac thu, ca thu
va hanh » van hanh, va thanh, va danh
thiet » thieu

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 thu hanh xa hoi. hieu ve ((cam thuc) OR (cam thu)) va hanh lam ((cua triet) or (va thiet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach thu hanh xa hoi. hieu ve ((cam thuc) OR (cam thu)) va hanh lam ((cua triet) OR (va thiet))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach thu hanh xa hoi. hieu ve ((cam thuc) OR (cam thu)) va hanh lam ((cua triet) or (va thiet))*".