Perhaps you should try some spelling variations:
dang dai » dang hai, dang bai, dang dan
dung dan » dung dat, dung san, tung dan
phat xuc » chat xuc, phat xuat, phap xu
su phat » su pham, tu phat, xu phat
dinh vi » dinh ve, dinh viet, dinh tri
hieu su » hieu sau, tieu su, hieu so
dinh di » dinh du, danh di, dinh da
tu cao » cu cao, tu cac, vu cao
xuc va » duc va, tuc va, luc va
cua tu » cua tuc, cua su, cua cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu cao ky ((dang dai) or (dung dan)) hoi. hieu su phat xuc va ((dinh di) OR (dinh vi)) cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cao ky ((dang dai) OR (dung dan)) hoi. hieu su phat xuc va ((dinh di) OR (dinh vi)) cua tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu cao ky ((dang dai) or (dung dan)) hoi. hieu su phat xuc va ((dinh di) OR (dinh vi)) cua tu".
• Adding a wildcard symbol may retrieve word variants: tu cao ky ((dang dai) or (dung dan)) hoi. hieu su phat xuc va ((dinh di) OR (dinh vi)) cua tu*.