Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
pham thuc » phap thuc, pham chuc, nham thuc
thu sach » thuoc sach, thu hoach, khau sach
hanh lai » hanh lam, hanh tai, thanh lap
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
ve pham » vi pham, v pham, ve phan
tu sach » su sach, te sach, tu cach
thuc va » thuc vat, thuc dan, thuc day
va hanh » van hanh, va thanh, va danh
lai cua » dai cua, hai cua, lai chau
cua tre » cua te, cuu tre, cua triet

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

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