Perhaps you should try some spelling variations:
thien van » thi van
thuc day » thuc dan, thuc vat
cuu tre » cua tre, cau tren, cau treo
thuc va » thuc vat, thuc dan
van cau » van dau, van hau, van chat
tang xa » trang xa, tang ma, lang xa
ky tang » ky nang, ky dang, kho tang
su sach » so sach, vu sach
vi cuu » vi luu, vinh cuu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((vu bach) or (su sach)) ky tang xa hoi. thien van cau ((thuc va) or (thuc day)) hanh vi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu bach) OR (su sach)) ky tang xa hoi. thien van cau ((thuc va) OR (thuc day)) hanh vi cuu tre.
• Adding a wildcard symbol may retrieve word variants: ((vu bach) or (su sach)) ky tang xa hoi. thien van cau ((thuc va) or (thuc day)) hanh vi cuu tre*.