Perhaps you should try some spelling variations:
pham thuc » phap thuc, pham chuc, nham thuc
cua triet » su triet, va triet
cua viet » ca viet, hoa viet, cua vat
cham tuc » nham thuc, tham thuc, cham soc
danh dau » lanh dao, hang dau, danh tu
va danh » va dinh, va dan, va hanh
te sach » toc sach
hieu ve » hieu va, hieu van
tang xa » trang xa, tang ma, lang xa
y tang » ky tang, 6 tang, 7 tang

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach y tang xa hoi. hieu ve ((cham tuc) OR (pham thuc)) va danh dau ((cua triet) or (cua viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y tang xa hoi. hieu ve ((cham tuc) OR (pham thuc)) va danh dau ((cua triet) OR (cua viet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y tang xa hoi. hieu ve ((cham tuc) OR (pham thuc)) va danh dau ((cua triet) or (cua viet))".
• Adding a wildcard symbol may retrieve word variants: te sach y tang xa hoi. hieu ve ((cham tuc) OR (pham thuc)) va danh dau ((cua triet) or (cua viet))*.