Perhaps you should try some spelling variations:
tang mai » tang ma, tang tai, lang mai
cham luc » cham soc, cham cuu, chat lua
nhan luc » nang luc
danh day » danh dau, dan day, doanh dao
te sach » toc sach
mai hoi » mai khoi, dai hoi, lai hoi
hieu ve » hieu va, hieu van
va danh » va dinh, va dan, va hanh
day hoa » day hoc, dai hoa, danh hoa
y tang » ky tang, 6 tang, 7 tang

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 y tang mai hoi. hieu ve ((cham luc) or (nhan luc)) va danh day hoa viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y tang mai hoi. hieu ve ((cham luc) OR (nhan luc)) va danh day hoa viet.
• Adding a wildcard symbol may retrieve word variants: te sach y tang mai hoi. hieu ve ((cham luc) or (nhan luc)) va danh day hoa viet*.