Perhaps you should try some spelling variations:
hieu viec » nhieu viec, hieu ve, sieu viet
trinh dai » trinh tai, trinh di, trinh da
tinh dai » tinh da, tinh hai, tinh doi
viec cam » viec lam, viec cua, viec va
sach ky » sac ky, sach y, sach ty
te sach » toc sach
lang xa » dang xay, lang van
lang ha » long ha
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: te sach ky ((lang xa) OR (lang ha)) 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: te sach ky ((lang xa) OR (lang ha)) hoi. hieu viec cam xuc va ((tinh dai) OR (trinh dai)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky ((lang xa) OR (lang ha)) hoi. hieu viec cam xuc va ((tinh dai) or (trinh dai)) cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach ky ((lang xa) OR (lang ha)) hoi. hieu viec cam xuc va ((tinh dai) or (trinh dai)) cua tre*.