Perhaps you should try some spelling variations:
danh tai » doanh tai, dinh tai, hanh tai
vu sach » su sach, vu khach
cao tuc » dao tuc, cao duc, cao suc
tai cua » thai cua, tai cuc, tri cua
nang co » nang cao, nang doc, nang noi
va danh » va dinh, va dan, va hanh
nang ra » nang ma, lang ra, nang ro
tuc va » thuc va, truc va, tuc xa
va cao » va cac, va co, va dao
cua te » cua tu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((vu sach) OR (vu bach)) tu ((nang co) or (nang ra)) hoi. lieu va cao tuc va danh tai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu sach) OR (vu bach)) tu ((nang co) OR (nang ra)) hoi. lieu va cao tuc va danh tai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((vu sach) OR (vu bach)) tu ((nang co) or (nang ra)) hoi. lieu va cao tuc va danh tai cua te".
• Adding a wildcard symbol may retrieve word variants: ((vu sach) OR (vu bach)) tu ((nang co) or (nang ra)) hoi. lieu va cao tuc va danh tai cua te*.