Perhaps you should try some spelling variations:
cham tuc » nham thuc, pham thuc, tham thuc
nang xa » lang xa, nang ma, mang xa
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
va hanh » van hanh, va thanh, va danh
hai cua » thai cua, dai cua, lai cua
hoi cua » hoi chuc
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 x)) hoi. hieu ve cham tuc va hanh ((hai cua) or (hoi cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cac ky ((nang xa) OR (nang x)) hoi. hieu ve cham tuc va hanh ((hai cua) OR (hoi cua)) tre.
• Adding a wildcard symbol may retrieve word variants: tu cac ky ((nang xa) or (nang x)) hoi. hieu ve cham tuc va hanh ((hai cua) or (hoi cua)) tre*.