Perhaps you should try some spelling variations:
nang mai » nang ma, nang tai, lang mai
va thanh » gia thanh, ban thanh, va tinh
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
vai cua » dai cua, hai cua, lai cua
cao xuc » cao duc, cao suc, chat xuc
hieu va » lieu va, hieu qua
mai hoi » mai khoi, dai hoi, lai hoi
di cua » dai cua, doi cua, de cua

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 nang mai hoi. hieu va ((cao xuc) OR (cam xuc)) va thanh ((vai cua) or (di cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang mai hoi. hieu va ((cao xuc) OR (cam xuc)) va thanh ((vai cua) OR (di cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky nang mai hoi. hieu va ((cao xuc) OR (cam xuc)) va thanh ((vai cua) or (di cua)) tre".
• Adding a wildcard symbol may retrieve word variants: su sach ky nang mai hoi. hieu va ((cao xuc) OR (cam xuc)) va thanh ((vai cua) or (di cua)) tre*.