Perhaps you should try some spelling variations:
tinh vai » tinh va, tinh hai, tinh bai
tu sach » thu sach, su sach, te sach
cham lo » cham o, cham soc, cham hoi
cua tre » cua te, cua triet, dua tren
va tinh » may tinh
cuu tre » cau tren, cau treo
hieu va » lieu va, hieu qua
tang ma » mang may, tang van
sach 7 » sach y, sach 2
cam lo » nam lo, cam ly, cam o
ma hoi » mai hoi, xa hoi, ma hoa
7 tang » 6 tang

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 7 tang ma hoi. hieu va ((cham lo) or (cam lo)) va tinh vai ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach 7 tang ma hoi. hieu va ((cham lo) OR (cam lo)) va tinh vai ((cua tre) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: tu sach 7 tang ma hoi. hieu va ((cham lo) or (cam lo)) va tinh vai ((cua tre) or (cuu tre))*.