Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
hai cua » thai cua, dai cua, hoi cua
va tinh » may tinh
va hanh » van hanh, va thanh, va danh
cac duc » cac du, cao duc, cac dac
van cac » van hac, van cau, van bac
tu cach » tu cac
cach tu » cach thuc
nang ma » tang ma, sang ma, nang cao
nang xa » nang x, lang xa, mang xa
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu cach tu ((nang xa) or (nang ma)) hoi. hieu van cac duc ((va hanh) or (va tinh)) hai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cach tu ((nang xa) OR (nang ma)) hoi. hieu van cac duc ((va hanh) OR (va tinh)) hai cua te.
• Adding a wildcard symbol may retrieve word variants: tu cach tu ((nang xa) or (nang ma)) hoi. hieu van cac duc ((va hanh) or (va tinh)) hai cua te*.