Perhaps you should try some spelling variations:
hieu vien » hieu hien, hieu viec, thieu nien
thanh gia » thanh gian, thanh giang, thanh nghia
gia cua » gian cua, giau cua, gia cuc
cao suc » cao su
cao duc » dao duc, giao duc, tao duoc
cua tre » cua te, cuu tre, cua triet
tang xa » trang xa, tang ma, lang xa
ky tang » ky nang, ky dang, kho tang
vu sach » vu bach, su sach, vu khach
vu sac » vu san, va sac, vu cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((vu sac) OR (vu sach)) ky tang xa hoi. hieu vien ((cao duc) or (cao suc)) gia thanh gia cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu sac) OR (vu sach)) ky tang xa hoi. hieu vien ((cao duc) OR (cao suc)) gia thanh gia cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((vu sac) OR (vu sach)) ky tang xa hoi. hieu vien ((cao duc) or (cao suc)) gia thanh gia cua tre*".