Perhaps you should try some spelling variations:
dang hai » dang khai, hang hai, dung hai
chu tri » chua tri, chu thi, chu tai
hanh va » hang va, hanh vi
va hanh » van hanh, va thanh, va danh
cam luc » cam xuc, cau luc
hieu va » lieu va
hai hoi » dai hoi, hai moi, hai hai
hieu ve » hieu van
ky dang » ky nang, ky danh
sac ky » cac ky, sai ky
luc va » duc va, tuc va, loc va
va chu » va che, va cau, va chi
te sac » te sach, te cac, te san

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sac ky dang hai hoi. ((hieu ve) or (((hieu va) OR (hieu qua)))) cam luc va hanh va chu tri~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky dang hai hoi. ((hieu ve) OR (((hieu va) OR (hieu qua)))) cam luc va hanh va chu tri*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ky dang hai hoi. ((hieu ve) or (((hieu va) OR (hieu qua)))) cam luc va hanh va chu tri*".