Perhaps you should try some spelling variations:
tinh lai » tinh lao, tinh hai, minh lai
vu sach » vu bach, su sach, vu khach
cua tre » cua te, cua triet, dua tren
va tinh » may tinh
sach ty » sach y, sach tu, sach thu
hieu ve » hieu va, hieu van
lang xa » lang ha, dang xay, lang van
nang xa » nang x, nang ma, mang xa
cuu tre » cau tren, cau treo
ve hoc » te hoc, va hoc, vi hoc
nuoc » quoc, duoc, ngoc

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 ((nang xa) or (lang xa)) hoi. hieu ve hoc nuoc va tinh lai ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ty ((nang xa) OR (lang xa)) hoi. hieu ve hoc nuoc va tinh lai ((cua tre) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: vu sach ty ((nang xa) or (lang xa)) hoi. hieu ve hoc nuoc va tinh lai ((cua tre) or (cuu tre))*.