Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
ban hanh » ban hang
hieu van » hieu va, thien van, lieu va
sach thu » sach thue, sach thieu, sach tham
nang xa » nang x, lang xa, nang ma
sach tu » cach tu, sach ty, sach uu
nam xuc » cam xuc, nam xua, nam thuc
nam mua » nam cua, nam qua, nam xua
vi cua » vai cua, di cua

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 tu) OR (sach thu)) nang xa hoi. hieu van ((nam xuc) or (nam mua)) ban hanh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach tu) OR (sach thu)) nang xa hoi. hieu van ((nam xuc) OR (nam mua)) ban hanh vi cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su ((sach tu) OR (sach thu)) nang xa hoi. hieu van ((nam xuc) or (nam mua)) ban hanh vi cua triet*".