Perhaps you should try some spelling variations:
nhan luc » nang luc
van hanh » van thanh, ban hanh, van anh
te sach » toc sach
sach ky » sac ky, sach y, sach ty
ky sang » ky nang, ky dang, ky tang
sang ma » tang ma, nang ma, sang tao
hau loc » huu loc, phau hoc
hanh le » thanh le, hanh ve, hanh de
cua tre » cua te, cuu tre, cua triet
ma hoi » mai hoi, xa hoi, ma hoa
le cua » ly cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky sang ma hoi. lieu va ((hau loc) or (nhan luc)) van hanh le cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky sang ma hoi. lieu va ((hau loc) OR (nhan luc)) van hanh le cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach ky sang ma hoi. lieu va ((hau loc) or (nhan luc)) van hanh le cua tre*.