Perhaps you should try some spelling variations:
thanh trinh » hanh trinh, thanh tinh, thanh binh
dan thanh » dang thanh, danh thanh, ban thanh
cham thuc » nham thuc, pham thuc, tham thuc
trinh cau » trinh chat, trinh chao, trinh tu
sach thu » sach thue, sach thieu, sach tham
thuc dan » thuc hanh, hoc dan, thuc vat
cau tren » cu tren, dau tren, ca tren
sach ty » sach y, sach tu, xach tay
xang xa » lang xa, mang xa, ang xa
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu ((sach ty) or (sach thu)) xang xa hoi. hieu ve cham thuc dan thanh trinh cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu ((sach ty) OR (sach thu)) xang xa hoi. hieu ve cham thuc dan thanh trinh cau tren.
• Adding a wildcard symbol may retrieve word variants: vu ((sach ty) or (sach thu)) xang xa hoi. hieu ve cham thuc dan thanh trinh cau tren*.