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

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