Perhaps you should try some spelling variations:
sach thue » sach thieu, sach tham, cach thuc
cua triet » cua viet, su triet, va triet
sach thu » sach thieu, sach tham, cach thuc
hieu van » hieu va, thien van, lieu va
lang xa » lang ha, dang xay, lang van
nam xuc » cam xuc, nam xua, nam thuc
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, dua tren
xuc va » duc va, tuc va, luc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu ((sach thu) or (sach thue)) lang xa hoi. hieu van nam xuc va hanh vi ((cua tre) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu ((sach thu) OR (sach thue)) lang xa hoi. hieu van nam xuc va hanh vi ((cua tre) OR (cua triet)).
• Adding a wildcard symbol may retrieve word variants: vu ((sach thu) or (sach thue)) lang xa hoi. hieu van nam xuc va hanh vi ((cua tre) or (cua triet))*.