Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, te sach
cuu tre » cua tre, cau tren, cau treo
danh va » doanh va, hanh va, anh va
va danh » va dinh, va dan, va hanh
hieu ve » hieu va, hieu van
su tien » su kien, su hien, tu tieng
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang
vu sach » vu bach, su sach, vu khach
cac ly » cac ky, cac le, cam ly
ve cac » va cac, vien cac

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) or (vu sach)) ty nang xa hoi. hieu ve cac ly va danh va ((cuu tre) or (su tien))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (vu sach)) ty nang xa hoi. hieu ve cac ly va danh va ((cuu tre) OR (su tien)).
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (vu sach)) ty nang xa hoi. hieu ve cac ly va danh va ((cuu tre) or (su tien))*.