Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
thi van » thi lan, thi hanh, thi nang
va danh » va dinh, va dan, dia danh
va hanh » van hanh, va thanh, ban hanh
cau xuc » cam xuc, cau luc, cau truc
van cau » van dau, van hau, van chat
hoa hoi » khoa hoi, hoa hoc, hoa doi
luat tu » luat tuc, luat thu, luat du
y lang » o lang, _ lang, tay lang
ha hoi » ha noi, xa hoi, va hoi

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 y lang ((ha hoi) OR (hoa hoi)). thi van cau xuc ((va hanh) or (va danh)) trinh luat tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach y lang ((ha hoi) OR (hoa hoi)). thi van cau xuc ((va hanh) OR (va danh)) trinh luat tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach y lang ((ha hoi) OR (hoa hoi)). thi van cau xuc ((va hanh) or (va danh)) trinh luat tu".
• Adding a wildcard symbol may retrieve word variants: toc sach y lang ((ha hoi) OR (hoa hoi)). thi van cau xuc ((va hanh) or (va danh)) trinh luat tu*.