Perhaps you should try some spelling variations:
thanh lap » phan lap, thanh hai, thanh van
dua tren » dung tren
sang tao » hang tai
cham luc » cham soc, nhan luc, cham cuu
tu sach » thu sach, su sach, te sach
ky sang » ky nang, ky dang, ky tang
tao hoi » tao khoi, tao boi, tay hoi
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
sach ky » sac ky, sach y, sach ty
luc va » duc va, tuc va, loc va
cua te » cua tu

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