Perhaps you should try some spelling variations:
hanh lam » thanh lap, hanh kem, hanh va
chat duc » chat xuc, chat doc, chet duoc
tu sach » thu sach, te sach, tu cach
lam cua » nam cua, lam chat
va hanh » van hanh, va thanh, va danh
ve chat » va chat, van chat
hieu ve » hieu va, hieu van
cua tre » cua te, cuu tre, cua triet
cao hoi » co hoi, cao hoc, tao hoi
su sach » so sach, vu sach
2 nang » v nang

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 (su sach)) 2 nang ((cao hoi) OR (cau hoi)). hieu ve chat duc va hanh lam cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) 2 nang ((cao hoi) OR (cau hoi)). hieu ve chat duc va hanh lam cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (su sach)) 2 nang ((cao hoi) OR (cau hoi)). hieu ve chat duc va hanh lam cua tre".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (su sach)) 2 nang ((cao hoi) OR (cau hoi)). hieu ve chat duc va hanh lam cua tre*.