Perhaps you should try some spelling variations:
su triet » su viet, su tien
ve triet » va trien
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 mai » cac bai, cac dai, cac mau
dan hai » doan hai, dang hai, dan khai
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 cac ky lang xa hoi. hieu va cac mai va dan hai ((((su triet) or (ve triet))) or (cua viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cac ky lang xa hoi. hieu va cac mai va dan hai ((((su triet) OR (ve triet))) OR (cua viet)).
• Adding a wildcard symbol may retrieve word variants: tu cac ky lang xa hoi. hieu va cac mai va dan hai ((((su triet) or (ve triet))) or (cua viet))*.