Perhaps you should try some spelling variations:
hanh hanh » hanh han, xanh hanh, nhanh thanh
dang xay » dang van, van xay
va thanh » gia thanh, ban thanh, va tinh
ngu hanh » ngu anh, ngu danh, luu hanh
hanh dai » hanh tai, hanh dao, vanh dai
su triet » su viet, su tien, ve triet
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
tu san » thu san, tu ban, tu can
san ky » sang ky, van ky, dan ky
dai su » dai sua, dai so, dan su

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu san ky ((nang xa) or (dang xay)) hoi. hieu va thanh ngu hanh hanh dai su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu san ky ((nang xa) OR (dang xay)) hoi. hieu va thanh ngu hanh hanh dai su triet.
• Adding a wildcard symbol may retrieve word variants: tu san ky ((nang xa) or (dang xay)) hoi. hieu va thanh ngu hanh hanh dai su triet*.