Perhaps you should try some spelling variations:
sach thue » sach thieu, sach tham, cach thuc
thien van » thi van
sach thu » sach thieu, sach tham, cach thuc
van chat » cao chat
chat luc » chat xuc, chat lua, nhan luc
van hanh » van thanh, ban hanh, van anh
hanh lam » thanh lap, hanh kem, hanh va
va trien » va truyen, va thiet, va tuyen
luc van » luoc van, luu van, duc van
lam va » nam va, dam va, lam ha
x hoi » xa hoi, o hoi, x ho

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 thu) OR (sach thue)) nang x hoi. thien van chat luc van hanh lam va trien~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su ((sach thu) OR (sach thue)) nang x hoi. thien van chat luc van hanh lam va trien".
• Adding a wildcard symbol may retrieve word variants: su ((sach thu) OR (sach thue)) nang x hoi. thien van chat luc van hanh lam va trien*.