Perhaps you should try some spelling variations:
gianh lai » gian lan
hieu vien » hieu hien, hieu viec, thieu nien
cua triet » cua viet, su triet, va triet
te sach » toc sach
vu sach » vu bach, su sach, vu khach
nang xa » nang x, lang xa, nang ma
lai cua » dai cua, hai cua, lai chau
bao va » bao ve, tao va, cao va

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

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