Perhaps you should try some spelling variations:
te sach » toc sach
sach ky » sac ky, sach y, sach ty
dat cua » dai cua, day cua, mat cua
dan dat » dung dat, dong dat, dinh dat
hieu ve » hieu va, hieu van
hieu vu » hieu va, hieu su, dieu vu
nang ma » tang ma, sang ma, nang cao
xuc va » tuc va, luc va, xac va
ma hoi » mai hoi, xa hoi, ma hoa
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 nang ma hoi. ((hieu vu) or (hieu ve)) cham ((xuc va) OR (duc va)) dan dat cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang ma hoi. ((hieu vu) OR (hieu ve)) cham ((xuc va) OR (duc va)) dan dat cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang ma hoi. ((hieu vu) or (hieu ve)) cham ((xuc va) OR (duc va)) dan dat cua te".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang ma hoi. ((hieu vu) or (hieu ve)) cham ((xuc va) OR (duc va)) dan dat cua te*.