Perhaps you should try some spelling variations:
tan thanh » tran thanh, tang thanh, toan thanh
thanh hai » thanh phan, thanh hoa, thanh san
cua triet » cua viet, su triet, va triet
hieu van » thien van, lieu va, hieu ve
dua tren » dung tren
ky dang » ky nang, ky danh
dang xa » dang xay, lang xa, dang ha
hieu va » lieu va, hieu qua
cam duc » cam xuc, cao duc, pham duc
su sac » su sach, su cac, su xac
sac ky » cac ky, sai ky

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 dang xa hoi. ((hieu van) or (hieu va)) cam duc tan thanh hai ((dua tren) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky dang xa hoi. ((hieu van) OR (hieu va)) cam duc tan thanh hai ((dua tren) OR (cua triet)).
• Adding a wildcard symbol may retrieve word variants: su sac ky dang xa hoi. ((hieu van) or (hieu va)) cam duc tan thanh hai ((dua tren) or (cua triet))*.