Perhaps you should try some spelling variations:
thien van » thi van
toc sach » hoc sach, doc sach, thuoc sach
dang xa » dang xay, dang ha, dang va
lang xa » lang ha, dang xay, lang van
sach ky » sac ky, sach y, sach ty
van dau » van dao, phan dau
tuc va » thuc va, truc va, tuc xa
vi cua » vai cua, di cua
cua te » cua tu

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 ky ((dang xa) or (lang xa)) hoi. thien van dau ((duc va) or (tuc va)) hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ky ((dang xa) OR (lang xa)) hoi. thien van dau ((duc va) OR (tuc va)) hanh vi cua te.
• Adding a wildcard symbol may retrieve word variants: toc sach ky ((dang xa) or (lang xa)) hoi. thien van dau ((duc va) or (tuc va)) hanh vi cua te*.