Perhaps you should try some spelling variations:
sinh dai » sinh thai, si dai, sinh vat
minh dai » minh dao, minh hai, minh ai
nang xay » dang xay, nganh xay, nang xuan
tu cach » tu cac
cam tuc » cam xuc, cam tu, nam thuc
ca viet » va viet, co viet, hoa viet
hieu ve » hieu va, hieu van
xay hoi » xa hoi, tay hoi, cay phoi
te sach » toc sach
tuc va » thuc va, truc va, tuc xa
ve cam » ve cham, ve cac, va cam

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu cach) or (te sach)) ky nang xay hoi. hieu ve cam tuc va ((minh dai) or (sinh dai)) ca viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cach) OR (te sach)) ky nang xay hoi. hieu ve cam tuc va ((minh dai) OR (sinh dai)) ca viet.
• Adding a wildcard symbol may retrieve word variants: ((tu cach) or (te sach)) ky nang xay hoi. hieu ve cam tuc va ((minh dai) or (sinh dai)) ca viet*.