Perhaps you should try some spelling variations:
pham thuc » phap thuc, pham chuc, nham thuc
thanh lai » thanh hai, thanh lap, thanh loi
cau tren » cu tren, dau tren, ca tren
va thanh » gia thanh, ban thanh, va tinh
cham tuc » nham thuc, tham thuc, cham soc
cua tre » cua te, cuu tre, cua triet
tu sach » thu sach, su sach, te sach
sach tu » sach thu, cach tu, sach ty
hieu ve » hieu va, hieu van
lang xa » lang ha, dang xay, lang van
tu lang » cu lang, tu lanh, xu lang

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

• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach tu lang xa hoi. hieu ve ((cham tuc) OR (pham thuc)) va thanh lai ((cua tre) OR (cau tren))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach tu lang xa hoi. hieu ve ((cham tuc) OR (pham thuc)) va thanh lai ((cua tre) or (cau tren))~".
• Adding a wildcard symbol may retrieve word variants: tu sach tu lang xa hoi. hieu ve ((cham tuc) OR (pham thuc)) va thanh lai ((cua tre) or (cau tren))*.