Perhaps you should try some spelling variations:
thanh hai » thanh phan, thanh hoa, thanh san
day thanh » dao thanh, dat thanh, da thanh
thuc day » thuc dan, thuc vat
su sach » so sach
ve chat » va chat, van chat
hai cuu » hai cua, hai chu, hai cuc
ve nham » ve nha, ve cham
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang
vu sach » vu bach, vu khach
cuu tre » cua tre, cau tren, cau treo

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)) ty nang xa hoi. hieu ((ve nham) or (ve chat)) thuc day thanh hai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (vu sach)) ty nang xa hoi. hieu ((ve nham) OR (ve chat)) thuc day thanh hai cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) OR (vu sach)) ty nang xa hoi. hieu ((ve nham) or (ve chat)) thuc day thanh hai cuu tre".
• Adding a wildcard symbol may retrieve word variants: ((su sach) OR (vu sach)) ty nang xa hoi. hieu ((ve nham) or (ve chat)) thuc day thanh hai cuu tre*.