Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
manh vai » manh hai, manh va, manh khai
dan manh » dang manh, doan manh, van manh
thuc dan » thuc hanh, hoc dan, thuc vat
nam thuc » nam thuoc, am thuc, nam thu
vai cua » dai cua, hai cua, lai cua
hieu ve » hieu va, hieu van
tu sach » thu sach, su sach, tu cach
nang ho » nang hoc, nang co, tang ho
te sach » toc sach
ve nam » he nam, va nam, le nam
nang o » nang co, nang ro, nang x

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) or (te sach)) ty ((nang o) OR (nang ho)) hoi. hieu ve nam thuc dan manh vai cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (te sach)) ty ((nang o) OR (nang ho)) hoi. hieu ve nam thuc dan manh vai cua viet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (te sach)) ty ((nang o) OR (nang ho)) hoi. hieu ve nam thuc dan manh vai cua viet*".