Perhaps you should try some spelling variations:
pham thuc » phap thuc, pham chuc, nham thuc
thuat co » thuat do, thuat o
cham tuc » nham thuc, tham thuc, cham soc
va triet » va thiet, va trien, ve triet
hieu va » lieu va, hieu qua
mang xa » lang xa, mang may, dang xay
va hanh » van hanh, va thanh, va danh
hanh tu » anh tu, danh tu
co ky » cao ky, cho ky, so ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat co ky ((mang xa) or (nang x)) hoi. hieu va ((cham tuc) or (pham thuc)) va hanh tu va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat co ky ((mang xa) OR (nang x)) hoi. hieu va ((cham tuc) OR (pham thuc)) va hanh tu va triet.
• Adding a wildcard symbol may retrieve word variants: thuat co ky ((mang xa) or (nang x)) hoi. hieu va ((cham tuc) or (pham thuc)) va hanh tu va triet*.