Perhaps you should try some spelling variations:
cau treo » cau theo, cau tren, cau triet
tinh lai » tinh lao, tinh hai, minh lai
cua tre » cua te, cuu tre, cua triet
va tinh » may tinh
sach ty » sach y, sach tu, sach thu
su sach » so sach, vu sach
lang xa » lang ha, dang xay, lang van
nang xa » nang x, nang ma, mang xa
hieu ve » hieu va, hieu van
ve dat » de dat, va dat, ve dao
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: su sach ty ((nang xa) or (lang xa)) hoi. hieu ve dat nuoc va tinh lai ((cua tre) or (cau treo))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty ((nang xa) OR (lang xa)) hoi. hieu ve dat nuoc va tinh lai ((cua tre) OR (cau treo)).
• Adding a wildcard symbol may retrieve word variants: su sach ty ((nang xa) or (lang xa)) hoi. hieu ve dat nuoc va tinh lai ((cua tre) or (cau treo))*.