Perhaps you should try some spelling variations:
sach tham » sach nha
tham nang » nham nang, tham lang, tham nhung
vu triet » su triet, ve triet, va triet
va hanh » van hanh, va thanh, ban hanh
va danh » va dinh, va dan, dia danh
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
ve cam » ve cham, va cam, ve cai
lam vu » sam vu
ve cac » va cac, vien cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach tham nang xa hoi. hieu ((ve cam) or (ve cac)) duc ((va danh) OR (va hanh)) lam vu triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach tham nang xa hoi. hieu ((ve cam) OR (ve cac)) duc ((va danh) OR (va hanh)) lam vu triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach tham nang xa hoi. hieu ((ve cam) or (ve cac)) duc ((va danh) OR (va hanh)) lam vu triet*".