Perhaps you should try some spelling variations:
cac thuc » cach thuc, cac thu, can thuc
su sach » so sach, vu sach
ly nang » ky nang, ly hang, ly quang
ly vang » ly hang, ly van, ly quang
hieu ve » hieu va, hieu van
thuc va » thuc vat, thuc dan, thuc day
va hanh » van hanh, va thanh, va danh
cuu tre » cua tre, cau tren, cau treo
ve cac » va cac, vien cac
vi cuu » vi luu, vinh cuu

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 ((ly nang) or (ly vang)) ((xa hoi) or (x ho)). hieu ve cac thuc va hanh vi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((ly nang) OR (ly vang)) ((xa hoi) OR (x ho)). hieu ve cac thuc va hanh vi cuu tre.
• Adding a wildcard symbol may retrieve word variants: su sach ((ly nang) or (ly vang)) ((xa hoi) or (x ho)). hieu ve cac thuc va hanh vi cuu tre*.