Perhaps you should try some spelling variations:
han thai » han tai, ban thai, van thai
kly nang » ky nang, ki nang, kha nang
su sach » so sach, vu sach
va cham » va chat, va tham
ve cham » ve chat, vu cham, ve chim
ly nang » ky nang, ly hang, ly vang
thai va » thai van
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: su sach ((ly nang) or (kly nang)) xa hoi. hieu ((ve cham) OR (va cham)) xuc va han thai va thiet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((ly nang) OR (kly nang)) xa hoi. hieu ((ve cham) OR (va cham)) xuc va han thai va thiet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((ly nang) or (kly nang)) xa hoi. hieu ((ve cham) OR (va cham)) xuc va han thai va thiet".
• Adding a wildcard symbol may retrieve word variants: su sach ((ly nang) or (kly nang)) xa hoi. hieu ((ve cham) OR (va cham)) xuc va han thai va thiet*.