Perhaps you should try some spelling variations:
thien van » thi van
xach tay » canh tay
sach thu » sach thue, sach thieu, sach tham
nam thuc » nam thuoc, am thuc, nam thu
vat hanh » vat thanh, van hanh, va hanh
hanh via » hanh vi, hanh va, anh va
cau tren » cu tren, dau tren, ca tren
lang xa » lang ha, dang xay, lang van
via cau » va cau, giua cau, bia chau

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc ((xach tay) or (sach thu)) lang xa hoi. thien van nam thuc vat hanh via cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((xach tay) OR (sach thu)) lang xa hoi. thien van nam thuc vat hanh via cau tren.
• Adding a wildcard symbol may retrieve word variants: toc ((xach tay) or (sach thu)) lang xa hoi. thien van nam thuc vat hanh via cau tren*.