Perhaps you should try some spelling variations:
va thanh » gia thanh, ban thanh, va tinh
dinh cuu » dinh chi
va thuat » ky thuat, ki thuat, va thuc
ky dang » ky nang, ky danh
dang ha » dong ha, dung ha, lang ha
va tham » van tham, va cham
vi cuu » vi luu, vinh cuu
te sac » te sach, te cac, te san
soc va » hoc va, loc va, doc va
sac ky » cac ky, sai ky
ha hoi » hoa hoi, ha noi, xa hoi

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 ha hoi. hieu ((va tham) OR (va thuat)) soc va thanh ((vi cuu) or (dinh cuu)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky dang ha hoi. hieu ((va tham) OR (va thuat)) soc va thanh ((vi cuu) OR (dinh cuu)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ky dang ha hoi. hieu ((va tham) OR (va thuat)) soc va thanh ((vi cuu) or (dinh cuu)) tre".
• Adding a wildcard symbol may retrieve word variants: te sac ky dang ha hoi. hieu ((va tham) OR (va thuat)) soc va thanh ((vi cuu) or (dinh cuu)) tre*.