Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
su sach » so sach, vu sach
cua tre » cuu tre, cua triet, dua tren
cam dan » cac dan, ca dan, nam dan
xuc cam » phuc cam
cau xuc » cam xuc, cau luc, cau truc
sach ky » sac ky, sach y, sach ty
van cau » van dau, van hau, van chat
nang xa » nang x, lang xa, mang xa
nang ma » tang ma, sang ma, nang cao
dan vi » doan vi, don vi, dan va
cua te » cua tu

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 ky ((nang xa) or (nang ma)) hoi. hieu van cau xuc cam dan vi ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky ((nang xa) OR (nang ma)) hoi. hieu van cau xuc cam dan vi ((cua tre) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: su sach ky ((nang xa) or (nang ma)) hoi. hieu van cau xuc cam dan vi ((cua tre) or (cua te))*.