Perhaps you should try some spelling variations:
dung dat » dung va, dung tai
cham duc » pham duc, cham soc, pham duy
dan dat » dong dat, dinh dat, dan hoat
sach ky » sach y, sach ty, sach kem
vu cham » va cham, vu kham, tu cham
hieu vu » hieu va, hieu ve, hieu su
nang ma » tang ma, sang ma, nang cao
ma hoi » mai hoi, xa hoi, ma hoa
sac ky » cac ky, sai ky
cua te » cua tu

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) OR (sac ky)) nang ma hoi. hieu vu cham duc va ((dan dat) or (dung dat)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach ky) OR (sac ky)) nang ma hoi. hieu vu cham duc va ((dan dat) OR (dung dat)) cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach ky) OR (sac ky)) nang ma hoi. hieu vu cham duc va ((dan dat) or (dung dat)) cua te".
• Adding a wildcard symbol may retrieve word variants: te ((sach ky) OR (sac ky)) nang ma hoi. hieu vu cham duc va ((dan dat) or (dung dat)) cua te*.