Perhaps you should try some spelling variations:
thien van » thi van
sach thu » sach thue, sach thieu, sach tham
van chao » van chat, van hao, van cho
van hanh » van thanh, ban hanh, van anh
hanh lam » thanh lap, hanh kem, hanh va
va triet » va thiet, va trien, ve triet
sach ty » sach y, sach tu, xach tay
nang xa » nang x, lang xa, nang ma
xu van » tu van, vu van, su van
lam va » nam va, dam va, lam ha

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

• Performing a fuzzy search may retrieve terms with similar spellings: so ((sach ty) or (sach thu)) nang xa hoi. thien van chao xu van hanh lam va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so ((sach ty) OR (sach thu)) nang xa hoi. thien van chao xu van hanh lam va triet.
• Adding a wildcard symbol may retrieve word variants: so ((sach ty) or (sach thu)) nang xa hoi. thien van chao xu van hanh lam va triet*.