Perhaps you should try some spelling variations:
thanh tai » thanh hai, thanh toan, doanh tai
cao khoi » cac khoi, cao khai, co khoi
va thanh » gia thanh, ban thanh, va tinh
tu cach » tu cac
su sach » so sach, vu sach
hieu va » lieu va, hieu qua
cam duc » cao duc, pham duc, nam duoc
cuc tre » duc tre, cua tre, cuu tre

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu cach) or (su sach)) ky nang cao khoi. hieu va ((cam duc) OR (cam xuc)) va thanh tai cuc tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cach) OR (su sach)) ky nang cao khoi. hieu va ((cam duc) OR (cam xuc)) va thanh tai cuc tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu cach) or (su sach)) ky nang cao khoi. hieu va ((cam duc) OR (cam xuc)) va thanh tai cuc tre".
• Adding a wildcard symbol may retrieve word variants: ((tu cach) or (su sach)) ky nang cao khoi. hieu va ((cam duc) OR (cam xuc)) va thanh tai cuc tre*.