Perhaps you should try some spelling variations:
thien van » thi van
ban thanh » ban hanh, ban hang
va thanh » gia thanh, va tinh, le thanh
cua viet » ca viet, hoa viet, cua vat
vu sach » vu bach, su sach, vu khach
sach ky » sac ky, sach y, sach ty
ky dang » ky nang, ky danh
dang xa » dang xay, lang xa, dang ha
nam luc » nang luc, nhan luc, nam thuc
cuu tre » cua tre, cau tren, cau treo

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 ky dang xa hoi. thien van nam luc ((va thanh) OR (ban thanh)) vi ((cuu tre) or (cua viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ky dang xa hoi. thien van nam luc ((va thanh) OR (ban thanh)) vi ((cuu tre) OR (cua viet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ky dang xa hoi. thien van nam luc ((va thanh) OR (ban thanh)) vi ((cuu tre) or (cua viet))".
• Adding a wildcard symbol may retrieve word variants: vu sach ky dang xa hoi. thien van nam luc ((va thanh) OR (ban thanh)) vi ((cuu tre) or (cua viet))*.