Perhaps you should try some spelling variations:
thanh lai » thanh hai, thanh lap, thanh loi
doc sach » hoc sach, nuoc sach, dac sac
va thanh » gia thanh, ban thanh, va tinh
nang doc » nang luc
toc sach » hoc sach, thuoc sach, nuoc sach
nang co » nang cao, nang noi, nang hoc
hieu ve » hieu va, hieu van
ve pham » vi pham, v pham, ve phan
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: ((doc sach) or (toc sach)) ky ((nang co) OR (nang doc)) hoi. hieu ve pham duc va thanh lai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc sach) OR (toc sach)) ky ((nang co) OR (nang doc)) hoi. hieu ve pham duc va thanh lai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doc sach) or (toc sach)) ky ((nang co) OR (nang doc)) hoi. hieu ve pham duc va thanh lai cua tre".
• Adding a wildcard symbol may retrieve word variants: ((doc sach) or (toc sach)) ky ((nang co) OR (nang doc)) hoi. hieu ve pham duc va thanh lai cua tre*.