Perhaps you should try some spelling variations:
thien van » thi van
danh vai » danh sai, danh va, doanh van
dang xay » van xay
dang van » hoang van, hang va
tu sach » thu sach, su sach, te sach
vai cua » dai cua, hai cua, lai cua
va danh » va dinh, va dan, va hanh
truc va » thuc va, thuc vat, trung va
van cau » van dau, van hau, van chat
nang xa » nang x, lang xa, nang ma
cua tre » cua te, cuu tre, cua triet

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 y ((nang xa) or (((dang xay) OR (dang van)))) hoi. thien van cau truc va danh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y ((nang xa) OR (((dang xay) OR (dang van)))) hoi. thien van cau truc va danh vai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y ((nang xa) or (((dang xay) OR (dang van)))) hoi. thien van cau truc va danh vai cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sach y ((nang xa) or (((dang xay) OR (dang van)))) hoi. thien van cau truc va danh vai cua tre*.