Perhaps you should try some spelling variations:
duong sinh » duong minh, duong manh, trong sinh
dung sinh » dang sinh, dung ninh, dung vinh
nam thuc » nam thuoc, am thuc, nam thu
su triet » su viet, su tien, ve triet
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
hieu va » lieu va, hieu qua
te sac » te sach, te cac, te san
sac ky » cac ky, sai ky
va nam » van nam, ha nam, va nay
vi su » va su, ve su, ki su

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sac ky lang xa hoi. hieu va nam thuc ((dung sinh) or (duong sinh)) vi su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky lang xa hoi. hieu va nam thuc ((dung sinh) OR (duong sinh)) vi su triet.
• Adding a wildcard symbol may retrieve word variants: te sac ky lang xa hoi. hieu va nam thuc ((dung sinh) or (duong sinh)) vi su triet*.