Perhaps you should try some spelling variations:
trong xu » thong xu, trong su, trong thu
trinh vi » trinh va, trinh ve, trinh viet
vu sach » vu bach, su sach, vu khach
co truc » co thuc, cau truc, co trach
dinh vi » dinh ve, dinh viet, dinh tri
truc va » thuc va, thuc vat, trung va
cua tre » cua te, cuu tre, cua triet
sach ty » sach y, sach tu, sach thu
hieu ve » hieu va, hieu van
tang ma » mang may, tang van
ve co » vo co, va co, de co

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach ty ((tang ma) or (trong xu)) hoi. hieu ve co truc va ((dinh vi) or (trinh vi)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ty ((tang ma) OR (trong xu)) hoi. hieu ve co truc va ((dinh vi) OR (trinh vi)) cua tre.
• Adding a wildcard symbol may retrieve word variants: vu sach ty ((tang ma) or (trong xu)) hoi. hieu ve co truc va ((dinh vi) or (trinh vi)) cua tre*.