Perhaps you should try some spelling variations:
hieu viec » nhieu viec, hieu ve, sieu viet
trinh dai » trinh tai, trinh di, trinh da
dang xay » dang van, van xay
viec cam » viec lam, viec cua, viec va
tinh dai » tinh da, tinh hai, tinh doi
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
cua tre » cua te, cuu tre, cua triet
xuc va » duc va, tuc va, luc va

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 xuc va ((tinh dai) or (trinh dai)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky dang xay hoi. hieu viec cam xuc va ((tinh dai) OR (trinh dai)) cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ky dang xay hoi. hieu viec cam xuc va ((tinh dai) or (trinh dai)) cua tre*.