Perhaps you should try some spelling variations:
su sach » so sach, vu sach
truc va » thuc va, thuc vat, trung va
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
sang ma » tang ma, nang ma, sang tao
cuu tre » cua tre, cau tren, cau treo
ve cam » ve cham, ve cac, va cam
xuc va » duc va, tuc va, luc va
vi cuu » vi luu, vinh cuu

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 (sang ma)) hoi. hieu ve cam ((xuc va) or (truc va)) hanh vi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky ((nang xa) OR (sang ma)) hoi. hieu ve cam ((xuc va) OR (truc va)) hanh vi cuu tre.
• Adding a wildcard symbol may retrieve word variants: su sach ky ((nang xa) or (sang ma)) hoi. hieu ve cam ((xuc va) or (truc va)) hanh vi cuu tre*.