Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
trinh cua » tinh cua, trinh luat, trinh quan
toc sach » hoc sach, doc sach, nuoc sach
van cam » van nam, van lam, van cau
va danh » va dinh, va dan, dia danh
va hanh » van hanh, va thanh, ban hanh
thi van » thi lan, thi hanh, thi nang
long ha » dong ha, cong ha, dong hoa
ha hoi » hoa hoi, ha noi, xa hoi
o long » bo long, do long, vo long
cua tu » cua tuc, cua su, cua cu

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