Perhaps you should try some spelling variations:
qua nhan » cua nhan, qua nhat, qua phan
nhan luc » nang luc
bat hanh » bat khanh, ban hanh, bao hanh
va triet » va thiet, cua triet, va viet
va trien » va truyen, va thiet, va tuyen
ve triet » su triet
tu sach » thu sach, su sach, te sach
lang xa » lang ha, dang xay, lang van
luc bat » suc bat, luc nhat, luat bat
y lang » o lang, _ lang, tay lang

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 y lang xa hoi. hieu qua nhan luc bat hanh vi ((((va triet) or (va trien))) or (ve triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y lang xa hoi. hieu qua nhan luc bat hanh vi ((((va triet) OR (va trien))) OR (ve triet)).
• Adding a wildcard symbol may retrieve word variants: tu sach y lang xa hoi. hieu qua nhan luc bat hanh vi ((((va triet) or (va trien))) or (ve triet))*.