Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh va, hanh tai
vat hanh » vat thanh, van hanh, va hanh
tu sach » thu sach, su sach, te sach
hoc vat » hoc va, hoc viet, thuc vat
vu kham » vu khanh
sach ty » sach y, sach tu, sach thu
tu cham » toc cham, thi cham
xang xa » lang xa, mang xa, ang xa
cua tu » cua tuc, cua su, cua cu

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 hoi. hieu ((tu cham) or (vu kham)) hoc vat hanh vai ((cua te) OR (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty xang xa hoi. hieu ((tu cham) OR (vu kham)) hoc vat hanh vai ((cua te) OR (cua tu)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ty xang xa hoi. hieu ((tu cham) or (vu kham)) hoc vat hanh vai ((cua te) OR (cua tu))".
• Adding a wildcard symbol may retrieve word variants: tu sach ty xang xa hoi. hieu ((tu cham) or (vu kham)) hoc vat hanh vai ((cua te) OR (cua tu))*.