Perhaps you should try some spelling variations:
thanh tai » thanh hai, thanh toan, doanh tai
van thanh » ban thanh, van tuan
cham luc » cham soc, cham cuu, chat lua
thu sach » thuat sach, thuoc sach, thu hoach
nhan luc » nang luc
tu sach » su sach, te sach, tu cach
hieu vu » hieu va, hieu ve, hieu su
nang ma » tang ma, sang ma, nang cao
ma hoi » mai hoi, xa hoi, ma hoa
tai va » thai va, mai va, tri va
thiet » thieu

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) or (thu sach)) ky nang ma hoi. hieu vu ((cham luc) or (nhan luc)) van thanh tai va thiet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) ky nang ma hoi. hieu vu ((cham luc) OR (nhan luc)) van thanh tai va thiet.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thu sach)) ky nang ma hoi. hieu vu ((cham luc) or (nhan luc)) van thanh tai va thiet*.