Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh dat
cua triet » cua viet, su triet, va triet
sach thu » sach thue, sach thieu, sach tham
thu nang » thi nang, thu hang, thu bang
nang mai » nang ma, nang tai, lang mai
va thanh » gia thanh, ban thanh, va tinh
cua tre » cua te, cuu tre, dua tren
te sach » toc sach
ve cham » va cham, ve chat, vu cham
mai hoi » mai khoi, dai hoi, lai hoi
luc va » duc va, tuc va, loc va
ve cam » ve cac, va cam, ve cai

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach thu nang mai hoi. hieu ((ve cam) OR (ve cham)) luc va thanh dai ((cua tre) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach thu nang mai hoi. hieu ((ve cam) OR (ve cham)) luc va thanh dai ((cua tre) OR (cua triet))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach thu nang mai hoi. hieu ((ve cam) OR (ve cham)) luc va thanh dai ((cua tre) or (cua triet))*".