Perhaps you should try some spelling variations:
thuat cao » thuat co, thuat bao, thuat cam
pham thuc » phap thuc, pham chuc, nham thuc
cham tuc » nham thuc, tham thuc, cham soc
va triet » va thiet, va trien, ve triet
nang xa » lang xa, nang ma, mang xa
hieu va » lieu va, hieu qua
va hanh » van hanh, va thanh, va danh
hanh tu » anh tu, danh tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat cao ky ((nang 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 cao ky ((nang xa) OR (nang x)) hoi. hieu va ((cham tuc) OR (pham thuc)) va hanh tu va triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat cao ky ((nang 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 cao ky ((nang xa) or (nang x)) hoi. hieu va ((cham tuc) OR (pham thuc)) va hanh tu va triet*.