Perhaps you should try some spelling variations:
thien quan » trien quang, lien quan, thien van
hieu quan » hieu qua, lieu quan, lien quan
cau thuc » cau truc, cuu thuc, can thuc
va thanh » gia thanh, ban thanh, va tinh
thanh va » thanh van, hanh va, thanh ha
cau theo » cau thi, cau tao
thuc va » thuc vat, thuc dan, thuc day
su sac » su sach, su cac, su xac
sac ky » cac ky, sai ky
va cau » van cau, va cac, va dau
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sac ky nang x hoi. ((hieu quan) or (thien quan)) cau thuc va thanh va cau theo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky nang x hoi. ((hieu quan) OR (thien quan)) cau thuc va thanh va cau theo.
• Adding a wildcard symbol may retrieve word variants: su sac ky nang x hoi. ((hieu quan) or (thien quan)) cau thuc va thanh va cau theo*.