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