Perhaps you should try some spelling variations:
dieu hoa » dien hoa, tieu hoa, lieu hoc
hanh dai » hanh tai, hanh dao, vanh dai
nam thuc » nam thuoc, am thuc, nam thu
hieu hoa » tieu hoa, hiep hoa, hien khoa
tu sach » thu sach, su sach, te sach
va hanh » van hanh, va thanh, va danh
thuc va » thuc vat, thuc dan, thuc day
cua tre » cua te, cuu tre, cua triet
tang xa » trang xa, tang ma, lang xa
ky tang » ky nang, ky dang, kho tang

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sach) or (thuat toan)) ky tang xa hoi. ((hieu hoa) or (dieu hoa)) nam thuc va hanh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thuat toan)) ky tang xa hoi. ((hieu hoa) OR (dieu hoa)) nam thuc va hanh dai cua tre.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thuat toan)) ky tang xa hoi. ((hieu hoa) or (dieu hoa)) nam thuc va hanh dai cua tre*.