Perhaps you should try some spelling variations:
hoang manh » hoang minh, hoang anh, hoang xanh
dan manh » dang manh, doan manh, van manh
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
hieu ve » hieu va, hieu van
va viet » hoa viet, san viet, mai viet
vai va » mai va, dai va, hai va
x hoi » xa hoi, o hoi, x ho
ve am » va am

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 nang x hoi. hieu ve am thuc ((dan manh) or (hoang manh)) vai va viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang x hoi. hieu ve am thuc ((dan manh) OR (hoang manh)) vai va viet.
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang x hoi. hieu ve am thuc ((dan manh) or (hoang manh)) vai va viet*.