Perhaps you should try some spelling variations:
khai luoc » hai huoc, hai luom, dai luoc
cham luoc » cham soc, kham cuoc, tham nuoc
van hanh » van thanh, ban hanh, van anh
vu sach » vu bach, su sach, vu khach
nang ma » tang ma, sang ma, nang cao
nang xa » nang x, lang xa, mang xa
cuu tre » cua tre, cau tren, cau treo
vi cuu » vi luu, vinh cuu

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

• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach y ((nang xa) OR (nang ma)) hoi. lieu va ((cham luoc) OR (khai luoc)) van hanh vi cuu tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach y ((nang xa) or (nang ma)) hoi. lieu va ((cham luoc) OR (khai luoc)) van hanh vi cuu tre~".
• Adding a wildcard symbol may retrieve word variants: vu sach y ((nang xa) or (nang ma)) hoi. lieu va ((cham luoc) OR (khai luoc)) van hanh vi cuu tre*.