Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
dung sai » dung tai, dung va, dung dat
toc sac » toc sach, toc san, hoc sach
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
hieu va » lieu va, hieu qua
va cham » va chat, va tham
cua tu » cua tuc, cua su, cua cu
tuc va » thuc va, truc va, tuc xa
sac ky » cac ky, sai ky
xuc va » duc va, luc va, xac va

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sac ky lang xa hoi. hieu va cham ((xuc va) OR (tuc va)) dung sai ((su triet) or (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sac ky lang xa hoi. hieu va cham ((xuc va) OR (tuc va)) dung sai ((su triet) OR (cua tu)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sac ky lang xa hoi. hieu va cham ((xuc va) OR (tuc va)) dung sai ((su triet) or (cua tu))".
• Adding a wildcard symbol may retrieve word variants: toc sac ky lang xa hoi. hieu va cham ((xuc va) OR (tuc va)) dung sai ((su triet) or (cua tu))*.