Perhaps you should try some spelling variations:
truong tin » truong tinh, trong tin, truong ton
lap truong » cac truong, xa truong, tai truong
con hong » con song, cong thong, cong khong
giai con » gian con, giai doan, giao cong
hong tin » thong tin, hong tien, dong tin
ve giai » va giai, ve giao, de giai
sach ha » sach nha, sach han, bach ha
sach xa » sach dao, sach nha, sach bai
ke giai » kem giai, de giai, ke giao
ve gioi » vien gioi, van gioi
tu sach » thu sach, su sach, te sach
xa ke » va ke, ba ke, ca ke

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu sach ha ((ve gioi) OR (ve giai)) lap truong tin ) OR ( tu sach xa ke giai con hong tin ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( tu sach ha ((ve gioi) OR (ve giai)) lap truong tin ) or ( tu sach xa ke giai con hong tin ))~".
• Adding a wildcard symbol may retrieve word variants: (( tu sach ha ((ve gioi) OR (ve giai)) lap truong tin ) or ( tu sach xa ke giai con hong tin ))*.