Perhaps you should try some spelling variations:
nang mai » nang ma, nang tai, lang mai
cham luc » nhan luc, cham cuu, chat lua
tinh vai » tinh va, tinh hai, tinh bai
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
mai hoi » mai khoi, dai hoi, lai hoi
hieu vu » hieu va, hieu ve, hieu su
va tinh » may tinh
vai cua » dai cua, hai cua, lai cua
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: tu sach ky nang mai hoi. hieu vu ((cham luc) OR (cham soc)) va tinh vai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang mai hoi. hieu vu ((cham luc) OR (cham soc)) va tinh vai cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang mai hoi. hieu vu ((cham luc) OR (cham soc)) va tinh vai cua tre*.