Perhaps you should try some spelling variations:
thanh tai » thanh hai, thanh toan, doanh tai
bat thanh » ban thanh, bac thanh, dat thanh
nhan luc » nang luc
sach nay » sach hay, sach vay, sach nang
quang va » quang van, quan va, quang ma
sach tay » xach tay, sach hay, sach tai
tai cua » thai cua, tai cuc, tri cua
luc bat » suc bat, luc nhat, luat bat
va nhan » van nhan, ca nhan, va phan
hieu va » lieu va, hieu qua
cua tre » cua te, cuu tre, cua triet
va hoa » van hoa, va hoc, ma hoa

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: su ((sach tay) or (sach nay)) quang va hoa. hieu va nhan luc bat thanh tai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach tay) OR (sach nay)) quang va hoa. hieu va nhan luc bat thanh tai cua tre.
• Adding a wildcard symbol may retrieve word variants: su ((sach tay) or (sach nay)) quang va hoa. hieu va nhan luc bat thanh tai cua tre*.