Perhaps you should try some spelling variations:
trinh viet » ninh viet, trinh vat
trang xa » trang va, trang ha, trang tai
trong xa » trong xay, trong ca, trong xu
doc thuc » hoc thuc, do thuc, hoc thuoc
su sach » so sach, vu sach
tinh vi » trinh vi, tinh voi, tinh va
cua tre » cua te, cuu tre, cua triet
thuc va » thuc vat, thuc dan, thuc day
sach ty » sach y, sach tu, sach thu
hieu ve » hieu va, hieu van
ve doc » ve duoc, va doc, me doc

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 ty ((trang xa) or (trong xa)) hoi. hieu ve doc thuc va ((tinh vi) or (trinh viet)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty ((trang xa) OR (trong xa)) hoi. hieu ve doc thuc va ((tinh vi) OR (trinh viet)) cua tre.
• Adding a wildcard symbol may retrieve word variants: su sach ty ((trang xa) or (trong xa)) hoi. hieu ve doc thuc va ((tinh vi) or (trinh viet)) cua tre*.