Perhaps you should try some spelling variations:
hieu viec » nhieu viec, hieu ve, sieu viet
viec cam » viec lam, viec cua, viec va
tinh dai » trinh dai, tinh da, tinh hai
tu sach » thu sach, su sach, te sach
ky dang » ky danh
van hoi » van hoa, van hoc, van hoe
cua tre » cua te, cuu tre, cua triet
xuc va » duc va, luc va, xac va
tuc va » thuc va, truc va, tuc xa

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) or (ky nang)) van hoi. hieu viec cam ((xuc va) OR (tuc va)) tinh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((ky dang) OR (ky nang)) van hoi. hieu viec cam ((xuc va) OR (tuc va)) tinh dai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((ky dang) or (ky nang)) van hoi. hieu viec cam ((xuc va) OR (tuc va)) tinh dai cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ((ky dang) or (ky nang)) van hoi. hieu viec cam ((xuc va) OR (tuc va)) tinh dai cua tre*.