Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
hoi lang » hoa lang
cham tuc » nham thuc, pham thuc, tham thuc
van hanh » van thanh, ban hanh, van anh
hoi dan » hoa dan, hoc dan, hoi dap
hieu vu » hieu va, hieu ve, hieu su
vu cham » va cham, vu kham, tu cham
tuc van » thuc van, truc van, tuc va
cua tre » cua te, cuu tre, cua triet
y lang » o lang, _ lang, tay lang
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuoc sach ((y lang) or (((hoi lang) OR (hoi dan)))) van hoa. hieu vu cham tuc van hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach ((y lang) OR (((hoi lang) OR (hoi dan)))) van hoa. hieu vu cham tuc van hanh vi cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc sach ((y lang) or (((hoi lang) OR (hoi dan)))) van hoa. hieu vu cham tuc van hanh vi cua tre*".