Perhaps you should try some spelling variations:
sach thue » sach thu, sach thieu, sach tham
thue nang » thien nang, thuat nang, thi nang
ban hanh » ban hang
va triet » va thiet, va trien, ve triet
tu sach » thu sach, su sach, te sach
mai hoi » mai khoi, dai hoi, lai hoi
cac xuc » cam xuc, cac nuoc, chat xuc
va hanh » van hanh, va thanh, va danh
ma hoi » xa hoi, ma hoa, me hoi
vi va » vi van, vai va, vu va

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach thue nang ((ma hoi) or (mai hoi)). lieu va cac xuc ((va hanh) or (ban hanh)) vi va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach thue nang ((ma hoi) OR (mai hoi)). lieu va cac xuc ((va hanh) OR (ban hanh)) vi va triet.
• Adding a wildcard symbol may retrieve word variants: tu sach thue nang ((ma hoi) or (mai hoi)). lieu va cac xuc ((va hanh) or (ban hanh)) vi va triet*.