Perhaps you should try some spelling variations:
thanh tinh » thanh binh, nhanh tinh, than kinh
cau tren » cu tren, dau tren, ca tren
va thanh » gia thanh, ban thanh, va tinh
nam quan » nam huan, sam quan, tam quan
nam qua » nam cua, nam mua, nam xua
sach ky » sac ky, sach y, sach ty
hieu ca » hieu cac, hieu cua, hieu va
cua tre » cua te, cuu tre, cua triet
tu sach » thu sach, su sach, te sach
x hoi » xa hoi, o hoi, x ho

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 x hoi. hieu ca ((nam qua) or (nam quan)) va thanh tinh ((cua tre) or (cau tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang x hoi. hieu ca ((nam qua) OR (nam quan)) va thanh tinh ((cua tre) OR (cau tren)).
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang x hoi. hieu ca ((nam qua) or (nam quan)) va thanh tinh ((cua tre) or (cau tren))*.