Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
vanh dai » van dai, vanh tai, lanh dao
nang xa » nang x, lang xa, mang xa
nang ma » tang ma, sang ma, nang cao
ve chat » va chat, van chat
va vanh » va van, va danh, va hanh
va cam » va cham, va cac, va cao
tuc va » thuc va, truc va, tuc xa

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu cac ky ((nang xa) OR (nang ma)) hoi. hieu ((va cam) or (ve chat)) tuc va vanh dai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cac ky ((nang xa) OR (nang ma)) hoi. hieu ((va cam) OR (ve chat)) tuc va vanh dai cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu cac ky ((nang xa) OR (nang ma)) hoi. hieu ((va cam) or (ve chat)) tuc va vanh dai cua triet".
• Adding a wildcard symbol may retrieve word variants: tu cac ky ((nang xa) OR (nang ma)) hoi. hieu ((va cam) or (ve chat)) tuc va vanh dai cua triet*.