Perhaps you should try some spelling variations:
sach tay » xach tay, sach hay, sach nay
tay lang » tai lang, tay tang, tay quang
lang van » dang van, tang van, hoang van
nhan luc » nang luc
van hanh » van thanh, ban hanh, van anh
va triet » va trien, ve triet, cua triet
tu sach » thu sach, su sach, te sach
hieu va » hieu qua
luc van » luoc van, luu van, duc van
thiet » thieu

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 tay lang van hoa. ((hieu va) or (lieu va)) nhan luc van hanh vi ((va triet) or (va thiet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach tay lang van hoa. ((hieu va) OR (lieu va)) nhan luc van hanh vi ((va triet) OR (va thiet)).
• Adding a wildcard symbol may retrieve word variants: tu sach tay lang van hoa. ((hieu va) or (lieu va)) nhan luc van hanh vi ((va triet) or (va thiet))*.