Perhaps you should try some spelling variations:
thanh luc » thanh luu, than luc, nhan luc
thu sach » tu sach, thuat sach, thuoc sach
thi hang » thi hanh, thi hong, thi thanh
thi nang » thi cong, ki nang, thi hanh
xanh di » danh di, vanh dai, xanh tai
va xanh » va hanh, va danh, va anh
thi van » thi hanh
thi lan » thi hanh, thi lien
cuu tre » cua tre, cau tren, cau treo
luc va » duc va, tuc va, loc va
di cuu » di cau, di cua, dinh cuu

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ((thi hang) OR (thi nang)) cau hoi. ((thi van) or (thi lan)) thanh luc va xanh di cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ((thi hang) OR (thi nang)) cau hoi. ((thi van) OR (thi lan)) thanh luc va xanh di cuu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ((thi hang) OR (thi nang)) cau hoi. ((thi van) or (thi lan)) thanh luc va xanh di cuu tre*".