Perhaps you should try some spelling variations:
tru nang » tra nang, tri nang, truc nano
gian cua » gian xu, ban cua
sach tru » sach truc, sach thu, sach tu
su sach » so sach, vu sach
nang xa » nang x, lang xa, nang ma
via cua » gia cua, giau cua, rija cua
va danh » va dinh, va dan, va hanh
va dao » ca dao
ve cao » va cao, ve bao, ve cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach tru nang xa hoi. hieu ((ve cao) or (va dao)) duc va danh ((via cua) OR (gian cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach tru nang xa hoi. hieu ((ve cao) OR (va dao)) duc va danh ((via cua) OR (gian cua)) te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach tru nang xa hoi. hieu ((ve cao) or (va dao)) duc va danh ((via cua) OR (gian cua)) te".
• Adding a wildcard symbol may retrieve word variants: su sach tru nang xa hoi. hieu ((ve cao) or (va dao)) duc va danh ((via cua) OR (gian cua)) te*.