Perhaps you should try some spelling variations:
nang dai » nang dau, nang tai, lang dai
tinh dai » trinh dai, tinh da, tinh hai
te sach » toc sach
sach ky » sac ky, sach y, sach ty
va tinh » may tinh
va cham » va chat, va tham
ve chat » va chat, van chat
ve cham » vu cham, ve chim, viet cham
dai hoi » dai hoc, dai hai, dai moi
cua tre » cua te, cuu tre, cua triet
luc va » duc va, tuc va, loc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky nang dai hoi. hieu ((((ve cham) OR (ve chat))) or (va cham)) luc va tinh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang dai hoi. hieu ((((ve cham) OR (ve chat))) OR (va cham)) luc va tinh dai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang dai hoi. hieu ((((ve cham) OR (ve chat))) or (va cham)) luc va tinh dai cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang dai hoi. hieu ((((ve cham) OR (ve chat))) or (va cham)) luc va tinh dai cua tre*.