Perhaps you should try some spelling variations:
cau theo » cau thi, cau tao
qua van » quan van, qua ban, qua san
thuc va » thuc vat, thuc dan, thuc day
hanh va » hang va, hanh vi
su sac » su sach, su cac, su xac
sac ky » cac ky, sai ky
tuc va » truc va, tuc xa, duc va
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 qua van ((tuc va) OR (thuc va)) hanh va cau theo~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sac ky nang x hoi. hieu qua van ((tuc va) OR (thuc va)) hanh va cau theo".
• Adding a wildcard symbol may retrieve word variants: su sac ky nang x hoi. hieu qua van ((tuc va) OR (thuc va)) hanh va cau theo*.