Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
cua viet » ca viet, hoa viet, cua vat
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
hieu va » lieu va, hieu qua
cac bac » cac bai, cac ban, cac cach
dan hai » doan hai, dang hai, dan khai
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
bac va » ban va, bac ha, bao va
va dan » ca dan, va dao, va dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sac ky lang xa hoi. hieu va cac bac va dan hai ((su triet) or (cua viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky lang xa hoi. hieu va cac bac va dan hai ((su triet) OR (cua viet)).
• Adding a wildcard symbol may retrieve word variants: tu sac ky lang xa hoi. hieu va cac bac va dan hai ((su triet) or (cua viet))*.