Perhaps you should try some spelling variations:
thuat sac » thuat sach, thuat san, thuat tac
dang xay » dang van, van xay
han thai » han tai, ban thai, van thai
cham xuc » cam xuc, chat xuc, cham soc
va cham » va chat, va tham
hieu va » lieu va, hieu qua
lang xa » lang ha, lang van
nang xa » nang x, nang ma, mang xa
thai va » thai van
sac ky » cac ky, sai ky
xuc va » duc va, tuc va, luc va
va han » va phan, van han, va hanh
thiet* » thieu*

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat sac ky ((nang xa) or (((lang xa) OR (dang xay)))) hoi. hieu va cham xuc va han thai va thiet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sac ky ((nang xa) OR (((lang xa) OR (dang xay)))) hoi. hieu va cham xuc va han thai va thiet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sac ky ((nang xa) or (((lang xa) OR (dang xay)))) hoi. hieu va cham xuc va han thai va thiet*".