Perhaps you should try some spelling variations:
pham thuc » phap thuc, pham chuc, nham thuc
thanh dam » thanh dat, thanh nam, thanh tam
va trien » va truyen, va thiet, va tuyen
sach dao » lanh dao
va thanh » gia thanh, ban thanh, va tinh
cham tuc » nham thuc, tham thuc, cham soc
tu sach » thu sach, su sach, te sach
hieu ve » hieu va, hieu van
tang ma » mang may, tang van
tang xa » trang xa, lang xa, tang ha
dam va » dam van, nam va, dam ha

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 dao ((tang xa) or (tang ma)) hoi. hieu ve ((cham tuc) or (pham thuc)) va thanh dam va trien~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach dao ((tang xa) OR (tang ma)) hoi. hieu ve ((cham tuc) OR (pham thuc)) va thanh dam va trien.
• Adding a wildcard symbol may retrieve word variants: tu sach dao ((tang xa) or (tang ma)) hoi. hieu ve ((cham tuc) or (pham thuc)) va thanh dam va trien*.