Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
danh vai » danh sai, danh va, doanh van
vai cua » dai cua, hai cua, lai cua
va danh » va dinh, va dan, va hanh
cau tuc » cau tu, cau luc, cau phuc
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
lang xa » lang ha, dang xay, lang van
nang xa » nang x, nang ma, mang xa

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