Perhaps you should try some spelling variations:
thien van » thi van
thu sach » tu sach, thuat sach, thuoc sach
hanh vai » hanh vi, hanh va, hanh tai
tham luc » than luc, tham nuoc, tham thuc
van tham » van thanh, van tuan, van chat
va triet » va thiet, va trien, ve triet
lang ha » long ha
nang xa » nang x, lang xa, nang ma
te sach » toc sach
va hanh » van hanh, va thanh, va danh
luc va » duc va, tuc va, loc va
vai va » mai va, dai va, hai va

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) or (te sach)) ky ((nang xa) or (lang ha)) hoi. thien van tham luc va hanh vai va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (te sach)) ky ((nang xa) OR (lang ha)) hoi. thien van tham luc va hanh vai va triet.
• Adding a wildcard symbol may retrieve word variants: ((thu sach) or (te sach)) ky ((nang xa) or (lang ha)) hoi. thien van tham luc va hanh vai va triet*.