Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
va trien » va truyen, va thiet, va tuyen
ban hanh » ban hang
nhan luc » nang luc
luc ban » duc ban, cuc ban, luc bat
sach ty » sach y, sach tu, sach thu
tu sach » thu sach, su sach, te sach
hang ca » hang va, nang cao, hang tai
hang xa » hoang xa, hang va, lang xa
va nhan » van nhan, ca nhan, va phan

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 ty ((hang xa) or (hang ca)) hoi. lieu va nhan luc ban hanh vi ((va trien) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty ((hang xa) OR (hang ca)) hoi. lieu va nhan luc ban hanh vi ((va trien) OR (su triet)).
• Adding a wildcard symbol may retrieve word variants: tu sach ty ((hang xa) or (hang ca)) hoi. lieu va nhan luc ban hanh vi ((va trien) or (su triet))*.