Perhaps you should try some spelling variations:
va hanh » van hanh, va thanh, va danh
nang xa » nang x, lang xa, mang xa
nang ma » tang ma, sang ma, nang cao
hieu va » lieu va, hieu qua
tu sai » tu bai, tu san, tu cai
di cua » dai cua, doi cua, de cua
va dan » ca dan, va dao, va dau
cua te » cua tu
co luc » coc luc, co luy
sai ky » sac ky
va co » vo co

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

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