Perhaps you should try some spelling variations:
thuc dai » thuc dan, thuc day, thuc tai
nam thuc » nam thuoc, am thuc, nam thu
dai hang » dai thang, dai han, dat hang
hang doi » hang di, hang loi, huong doi
su sach » so sach
vu sach » vu khach
hieu ve » hieu va, hieu van
doi cua » dai cua, hoi cua
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
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) or (((vu sach) OR (vu bach)))) y nang x ho. hieu ve nam thuc dai hang doi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (((vu sach) OR (vu bach)))) y nang x ho. hieu ve nam thuc dai hang doi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (((vu sach) OR (vu bach)))) y nang x ho. hieu ve nam thuc dai hang doi cua tre".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (((vu sach) OR (vu bach)))) y nang x ho. hieu ve nam thuc dai hang doi cua tre*.