Perhaps you should try some spelling variations:
su sach » so sach, vu sach
cua tre » cua te, cua triet, dua tren
kinh va » kinh van, tinh va, sinh va
va kinh » va tinh, qua kinh
hieu ve » hieu va, hieu van
ve chao » ve chat, ve cham, ve cho
nang xa » lang xa, nang ma, mang xa
cuu tre » cau tren, cau treo
xu va » xu van, tu va, su va

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 y ((nang xa) or (nang x)) hoi. hieu ve chao xu va kinh va ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y ((nang xa) OR (nang x)) hoi. hieu ve chao xu va kinh va ((cua tre) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: su sach y ((nang xa) or (nang x)) hoi. hieu ve chao xu va kinh va ((cua tre) or (cuu tre))*.