Perhaps you should try some spelling variations:
sach nang » cach mang, sach dung, sach danh
hieu van » hieu va, thien van, lieu va
dinh thi » dinh tri
tac dinh » xac dinh, tai dinh, tac danh
sach hay » sach han, sach ha, sach nay
sach tay » xach tay, sach nay, sach tai
lam xuc » cam xuc, lam duoc
lang xa » lang ha, dang xay, lang van
van lam » van nam
thi du » thi dua, thi dau, thi diu
du tre » duc tre, du tru, dua tren

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: thu ((sach tay) or (((sach hay) or (sach nang)))) lang xa hoi. hieu van lam xuc tac dinh thi du tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu ((sach tay) OR (((sach hay) OR (sach nang)))) lang xa hoi. hieu van lam xuc tac dinh thi du tre.
• Adding a wildcard symbol may retrieve word variants: thu ((sach tay) or (((sach hay) or (sach nang)))) lang xa hoi. hieu van lam xuc tac dinh thi du tre*.