Perhaps you should try some spelling variations:
thien van » thi van
van thanh » ban thanh, van tuan
toc sach » hoc sach, thuoc sach, nuoc sach
doc sach » hoc sach, nuoc sach, dac sac
duc van » duc va, duc tan, duc manh
hau duc » huu duc, ha duc, pham duc
van hau » van ha, van hai, van dau
nang xa » nang x, lang xa, nang ma
v nang » va nang, vu nang, van nang
de cua » te cua, dieu cua
le cua » ly cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((toc sach) OR (doc sach)) v nang xa hoi. thien van hau duc van thanh ((de cua) or (le cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc sach) OR (doc sach)) v nang xa hoi. thien van hau duc van thanh ((de cua) OR (le cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((toc sach) OR (doc sach)) v nang xa hoi. thien van hau duc van thanh ((de cua) or (le cua)) tre".
• Adding a wildcard symbol may retrieve word variants: ((toc sach) OR (doc sach)) v nang xa hoi. thien van hau duc van thanh ((de cua) or (le cua)) tre*.