Perhaps you should try some spelling variations:
thai cua » than cua, tai cuc, tri cua
nam thuc » nam thuoc, am thuc, nam thu
su sach » so sach, vu sach
vu dinh » quy dinh
va tinh » may tinh
va dinh » van dinh, va kinh, va sinh
hieu ve » hieu va, hieu van
lang xa » lang ha, dang xay, lang van
cua tre » cua te, cuu tre, cua triet
y lang » o lang, _ lang, tay lang
ve nam » he nam, va nam, le nam

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach y lang xa hoi. hieu ve nam thuc ((((va dinh) OR (vu dinh))) or (va tinh)) thai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y lang xa hoi. hieu ve nam thuc ((((va dinh) OR (vu dinh))) OR (va tinh)) thai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y lang xa hoi. hieu ve nam thuc ((((va dinh) OR (vu dinh))) or (va tinh)) thai cua tre*".