Perhaps you should try some spelling variations:
dan nhanh » dan hanh, dan khanh, dan thanh
cham hoc » cham soc, chat hoc, cham hoi
nhanh vi » hanh vi, nhanh va, nhanh thi
tu sach » thu sach, su sach, te sach
xang xa » mang xa, ang xa, dang xay
lang xa » lang ha, dang xay, lang van
hieu vu » hieu ve, hieu su, dieu vu
sach ty » sach y, sach tu, sach thu
hieu va » lieu va, hieu qua
vi cua » vai cua, di cua
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: tu sach ty ((xang xa) or (lang xa)) hoi. ((hieu vu) or (hieu va)) cham hoc dan nhanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty ((xang xa) OR (lang xa)) hoi. ((hieu vu) OR (hieu va)) cham hoc dan nhanh vi cua te.
• Adding a wildcard symbol may retrieve word variants: tu sach ty ((xang xa) or (lang xa)) hoi. ((hieu vu) or (hieu va)) cham hoc dan nhanh vi cua te*.