Perhaps you should try some spelling variations:
han thai » han tai, ban thai, van thai
va thieu » va thiet, va hieu, va tieu
su sach » so sach, vu sach
hieu vu » hieu va, hieu ve, hieu su
thai va » thai van
y lang » o lang, tay lang, yen lang
_ lang » o lang, _ land
vu cam » vu cham, vu cao, va cam
xuc va » duc va, tuc va, luc va
va han » va phan, van han, va hanh

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 ((y lang) OR (_ lang)) xa hoi. hieu vu cam xuc va han thai va thieu~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((y lang) OR (_ lang)) xa hoi. hieu vu cam xuc va han thai va thieu".
• Adding a wildcard symbol may retrieve word variants: su sach ((y lang) OR (_ lang)) xa hoi. hieu vu cam xuc va han thai va thieu*.