Perhaps you should try some spelling variations:
nam truc » nam truoc, nam thuc, nam trung
sach thu » sach thue, sach thieu, sach tham
hieu va » lieu va, hieu qua
danh vi » hanh vi, dinh vi, danh di
va danh » va dinh, va dan, va hanh
truc va » thuc va, thuc vat, trung va
sach ly » sach y, sach lo, sach hay
lang xa » lang ha, dang xay, lang van
sach ty » sach y, sach tu, xach tay
cuu tre » cua tre, cau tren, cau treo
va nam » van nam, ha nam, va nay
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 ly) or (((sach ty) OR (sach thu)))) lang xa hoi. hieu va nam truc va danh vi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach ly) OR (((sach ty) OR (sach thu)))) lang xa hoi. hieu va nam truc va danh vi cuu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su ((sach ly) or (((sach ty) OR (sach thu)))) lang xa hoi. hieu va nam truc va danh vi cuu tre*".