Perhaps you should try some spelling variations:
sach tru » sach truc, sach thu, sach tu
tru nang » tra nang, tri nang, truc nano
su sach » so sach, vu sach
va tinh » may tinh
tu cham » toc cham, thi cham
vu cham » va cham, vu kham, qua cham
nang xa » nang x, lang xa, nang ma
va chu » va che, va cau
va chi » van chi, va che, va cai

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 ((vu cham) or (tu cham)) duc va tinh ((va chu) OR (va chi)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach tru nang xa hoi. hieu ((vu cham) OR (tu cham)) duc va tinh ((va chu) OR (va chi)) te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach tru nang xa hoi. hieu ((vu cham) or (tu cham)) duc va tinh ((va chu) OR (va chi)) te*".