Perhaps you should try some spelling variations:
thanh hai » thanh phan, thanh hoa, thanh san
kho tang » cao tang
duc manh » suc manh, duc anh, duc minh
ky tang » ky nang, ky dang, ky trong
duc van » duc va, duc tan, duc phan
hai cua » thai cua, dai cua, hoi cua
su sac » su sach, su cac, su xac
hieu d » dieu d, hieu 2, hieu _
d pham » d phan
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: su sac ((ky tang) or (kho tang)) xa hoi. hieu d pham ((duc van) OR (duc manh)) thanh hai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ((ky tang) OR (kho tang)) xa hoi. hieu d pham ((duc van) OR (duc manh)) thanh hai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sac ((ky tang) or (kho tang)) xa hoi. hieu d pham ((duc van) OR (duc manh)) thanh hai cua te".
• Adding a wildcard symbol may retrieve word variants: su sac ((ky tang) or (kho tang)) xa hoi. hieu d pham ((duc van) OR (duc manh)) thanh hai cua te*.