Perhaps you should try some spelling variations:
qua cham » qua hai, qua cac, va cham
cham xuc » cam xuc, chat xuc, cham soc
dau khoa » da khoa, dac khoa, dai khoa
te sach » toc sach
sach ky » sac ky, sach y, sach ty
nang ma » tang ma, sang ma, nang cao
xuc cam » phuc cam
cam dan » cac dan, ca dan, nam dan
dai hoa » dai khoa, dai hoc, dai hoi

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 hoa. hieu qua cham xuc cam dan ((dai hoa) or (dau khoa)) viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang ma hoa. hieu qua cham xuc cam dan ((dai hoa) OR (dau khoa)) viet.
• Adding a wildcard symbol may retrieve word variants: te sach ky nang ma hoa. hieu qua cham xuc cam dan ((dai hoa) or (dau khoa)) viet*.