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

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