Perhaps you should try some spelling variations:
hung tai » hung thai, dung tai, hang tai
cham luc » cham soc, cham cuu, chat lua
nhan luc » nang luc
dua tren » dung tren
hanh lai » hanh lam, hanh tai, thanh lap
tu sach » thu sach, su sach, te sach
tu hung » tu chung, tu nhung, tu vung
tai hoi » tai khoi, dai hoi, tai hai
hieu ve » hieu va, hieu van
sach tu » sach thu, cach tu, sach ty
va hanh » van hanh, va thanh, va danh
cua te » cua tu

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 tu hung tai hoi. hieu ve ((cham luc) OR (nhan luc)) va hanh lai ((dua tren) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach tu hung tai hoi. hieu ve ((cham luc) OR (nhan luc)) va hanh lai ((dua tren) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach tu hung tai hoi. hieu ve ((cham luc) OR (nhan luc)) va hanh lai ((dua tren) or (cua te))".
• Adding a wildcard symbol may retrieve word variants: tu sach tu hung tai hoi. hieu ve ((cham luc) OR (nhan luc)) va hanh lai ((dua tren) or (cua te))*.