Perhaps you should try some spelling variations:
nay thuc » nam thuc, cay thuc, day thuc
thanh vi » hanh vi, thanh ve, nhanh vi
thanh va » thanh van, hanh va, thanh ha
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
thuc va » thuc vat, thuc dan, thuc day
cua tu » cua tuc, cua cu, cua te
vu sac » vu sach, vu san, va sac
va nay » va ngay, va cay
sac ky » cac ky, sai ky
cua su » qua su

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sac ky nang xa hoi. hieu va nay thuc va ((thanh vi) or (thanh va)) ((cua tu) OR (cua su))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sac ky nang xa hoi. hieu va nay thuc va ((thanh vi) OR (thanh va)) ((cua tu) OR (cua su)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sac ky nang xa hoi. hieu va nay thuc va ((thanh vi) or (thanh va)) ((cua tu) OR (cua su))".
• Adding a wildcard symbol may retrieve word variants: vu sac ky nang xa hoi. hieu va nay thuc va ((thanh vi) or (thanh va)) ((cua tu) OR (cua su))*.