Perhaps you should try some spelling variations:
gianh lai » gian lan
toc sach » hoc sach, doc sach, thuoc sach
sach ky » sac ky, sach y, sach ty
lai cua » dai cua, hai cua, lai chau
truc va » thuc va, thuc vat, trung va
dang xa » dang xay, lang xa, dang ha
ky dang » ky nang, ky danh
luc va » duc va, tuc va, loc va
va cau » van cau, va dau, va cao
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach ky dang xa hoi. hieu ((va cau) OR (va cac)) ((luc va) or (truc va)) gianh lai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ky dang xa hoi. hieu ((va cau) OR (va cac)) ((luc va) OR (truc va)) gianh lai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ky dang xa hoi. hieu ((va cau) OR (va cac)) ((luc va) or (truc va)) gianh lai cua te".
• Adding a wildcard symbol may retrieve word variants: toc sach ky dang xa hoi. hieu ((va cau) OR (va cac)) ((luc va) or (truc va)) gianh lai cua te*.