Perhaps you should try some spelling variations:
cham xuc » cam xuc, chat xuc, pham duc
cam lanh » cay lanh, cau lanh, lam lanh
te sach » toc sach
sach ky » sac ky, sach y, sach ty
nang ma » sang ma, nang cao, mang may
tang ma » mang may, tang van
hieu va » lieu va, hieu qua
ca viet » va viet, co viet, hoa viet
dao ca » dao cac, dao cao, dao cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky ((nang ma) or (tang ma)) hoa. hieu va ((cham xuc) OR (cham soc)) cam lanh dao ca viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky ((nang ma) OR (tang ma)) hoa. hieu va ((cham xuc) OR (cham soc)) cam lanh dao ca viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky ((nang ma) or (tang ma)) hoa. hieu va ((cham xuc) OR (cham soc)) cam lanh dao ca viet".
• Adding a wildcard symbol may retrieve word variants: te sach ky ((nang ma) or (tang ma)) hoa. hieu va ((cham xuc) OR (cham soc)) cam lanh dao ca viet*.