Perhaps you should try some spelling variations:
thuc dan » thuc hanh, hoc dan, thuc vat
dau treo » dau tren, cau treo, dau theo
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
thuc va » thuc vat, thuc day
hanh va » hang va, hanh vi
va dau » va dao
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 sach ky nang x hoi. hieu qua quan ((thuc va) or (thuc dan)) hanh va dau treo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang x hoi. hieu qua quan ((thuc va) OR (thuc dan)) hanh va dau treo.
• Adding a wildcard symbol may retrieve word variants: su sach ky nang x hoi. hieu qua quan ((thuc va) or (thuc dan)) hanh va dau treo*.