Perhaps you should try some spelling variations:
truc may » tren may, truc va
phuc may » hoc may, chua may, phan may
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
tinh vi » trinh vi, tinh voi, tinh va
cua tre » cua te, cuu tre, cua triet
hieu va » lieu va, hieu qua
co hoi » co hoc, co loi
vi cua » vai cua, di cua
va nam » van nam, ha nam, va nay

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 ((co hoi) or (xa hoi)). hieu va nam ((phuc may) or (truc may)) tinh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang ((co hoi) OR (xa hoi)). hieu va nam ((phuc may) OR (truc may)) tinh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: su sach ky nang ((co hoi) or (xa hoi)). hieu va nam ((phuc may) or (truc may)) tinh vi cua tre*.