Perhaps you should try some spelling variations:
ntoan tai » toan tap, nhan tai, ngoai tai
toan tai » toan tap, doanh tai, toan ban
dang van » hoang van, hang va
cham xuc » cam xuc, chat xuc, cham soc
tu sach » thu sach, su sach, te sach
va cham » va chat, va tham
sach ky » sac ky, sach y, sach ty
lang xa » lang ha, dang xay, lang van
xuc va » duc va, tuc va, luc va
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: tu sach ky ((lang xa) or (dang van)) hoi. lieu va cham xuc va ((toan tai) or (ntoan tai)) va thiet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky ((lang xa) OR (dang van)) hoi. lieu va cham xuc va ((toan tai) OR (ntoan tai)) va thiet.
• Adding a wildcard symbol may retrieve word variants: tu sach ky ((lang xa) or (dang van)) hoi. lieu va cham xuc va ((toan tai) or (ntoan tai)) va thiet*.