Perhaps you should try some spelling variations:
thanh lap » thanh san, phan lap, thanh hai
va thanh » gia thanh, ban thanh, va tinh
sang tao » hang tai
cham luc » cham soc, nhan luc, cham cuu
tu sach » thu sach, te sach, tu cach
va cham » va chat, va tham
hieu va » lieu va, hieu qua
tao hoi » tao khoi, tao boi, tay hoi
ky sang » ky nang, ky dang, ky tang
su sach » so sach, vu sach
luc va » duc va, tuc va, loc va
cua tu » cua tuc, cua su, cua cu

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) OR (su sach)) ky sang tao hoi. hieu va cham luc va thanh lap ((dung trong) or (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) ky sang tao hoi. hieu va cham luc va thanh lap ((dung trong) OR (cua tu)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (su sach)) ky sang tao hoi. hieu va cham luc va thanh lap ((dung trong) or (cua tu))".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (su sach)) ky sang tao hoi. hieu va cham luc va thanh lap ((dung trong) or (cua tu))*.