Perhaps you should try some spelling variations:
trinh dai » trinh tai, trinh di, trinh da
hieu viec » nhieu viec, hieu ve, sieu viet
toc sach » hoc sach, doc sach, thuoc sach
viec cam » viec lam, viec cua, viec va
tinh dai » tinh da, tinh hai, tinh doi
lang xa » lang ha, dang xay, lang van
cua tre » cua te, cuu tre, cua triet
y lang » o lang, _ lang, tay lang
xuc va » tuc va, luc va, xac va

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach y lang xa hoi. hieu viec cam ((xuc va) OR (duc va)) ((tinh dai) or (trinh dai)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach y lang xa hoi. hieu viec cam ((xuc va) OR (duc va)) ((tinh dai) OR (trinh dai)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach y lang xa hoi. hieu viec cam ((xuc va) OR (duc va)) ((tinh dai) or (trinh dai)) cua tre".
• Adding a wildcard symbol may retrieve word variants: toc sach y lang xa hoi. hieu viec cam ((xuc va) OR (duc va)) ((tinh dai) or (trinh dai)) cua tre*.