Perhaps you should try some spelling variations:
hieu viec » nhieu viec, hieu ve, sieu viet
dang xay » dang van, van xay
viec cam » viec lam, viec cua, viec va
tinh dai » trinh dai, tinh da, tinh hai
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
ky dang » ky nang, ky danh
xay hoi » xa hoi, tay hoi, cay phoi
cam duc » cam xuc, cao duc, pham duc
va tinh » may tinh
cua tre » cuu tre, cua triet, dua tren
cua te » cua tu

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 dang xay hoi. hieu viec cam duc va tinh dai ((cua tre) OR (cua te))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky dang xay hoi. hieu viec cam duc va tinh dai ((cua tre) OR (cua te))".
• Adding a wildcard symbol may retrieve word variants: tu sach ky dang xay hoi. hieu viec cam duc va tinh dai ((cua tre) OR (cua te))*.