Perhaps you should try some spelling variations:
thuc manh » thuc hanh, thuc thanh, thuc dan
thanh lai » thanh hai, thanh lap, thanh tai
thanh loi » thanh hoa, thanh hai, thanh lap
hieu van » hieu va, thien van, lieu va
nam thuc » nam thuoc, am thuc, nam thu
va triet » va thiet, va trien, ve triet
te sach » toc sach
sach ty » sach y, sach tu, sach thu
ty hang » ly hang, ty xang, thi hang
hang xa » hoang xa, hang va, hang ca

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ty hang xa hoi. hieu van nam thuc manh ((thanh lai) or (thanh loi)) va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty hang xa hoi. hieu van nam thuc manh ((thanh lai) OR (thanh loi)) va triet.
• Adding a wildcard symbol may retrieve word variants: te sach ty hang xa hoi. hieu van nam thuc manh ((thanh lai) or (thanh loi)) va triet*.