Perhaps you should try some spelling variations:
lang van » dang van, tang van, hoang van
dang xay » dang van, van xay
chat xuc » chat huu, cam xuc, chao xu
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va, hieu van
ve chat » va chat, van chat
va hanh » van hanh, va thanh, va danh
xuc va » duc va, tuc va, luc va
vi va » vi van, vai va, vu 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: su sach ky ((dang xay) or (lang van)) hoi. hieu ve chat xuc va hanh vi va thiet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky ((dang xay) OR (lang van)) hoi. hieu ve chat xuc va hanh vi va thiet.
• Adding a wildcard symbol may retrieve word variants: su sach ky ((dang xay) or (lang van)) hoi. hieu ve chat xuc va hanh vi va thiet*.