Perhaps you should try some spelling variations:
cham luc » nhan luc, cham cuu, chat lua
te sach » toc sach
hanh le » thanh le, hanh ve, hanh de
va hanh » van hanh, va thanh, va danh
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va, hieu van
tang ma » mang may, tang van
nang ma » sang ma, nang cao, mang may
cuu tre » cua tre, cau tren, cau treo
le cuu » le cua, le huu, le cau

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 ((nang ma) OR (tang ma)) hoi. hieu ve ((cham luc) or (cham soc)) va hanh le cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky ((nang ma) OR (tang ma)) hoi. hieu ve ((cham luc) OR (cham soc)) va hanh le cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky ((nang ma) OR (tang ma)) hoi. hieu ve ((cham luc) or (cham soc)) va hanh le cuu tre".
• Adding a wildcard symbol may retrieve word variants: te sach ky ((nang ma) OR (tang ma)) hoi. hieu ve ((cham luc) or (cham soc)) va hanh le cuu tre*.