Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
quoc tuan » quoc quan, quoc toan, quoc quang
cham quoc » chuan quoc, han quoc, cham soc
hieu su » hieu sau, tieu su, hieu so
dieu vu » dien vu, dieu va, dieu cua
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
sac ky » cac ky, sai ky
anh te » anh ta, anh ve, anh le
anh tu » anh tuan
tu sac » tu sach, tu cac, tu san

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. ((dieu vu) or (hieu su)) cham quoc tuan ((anh te) OR (anh tu)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky lang xa hoi. ((dieu vu) OR (hieu su)) cham quoc tuan ((anh te) OR (anh tu)) cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky lang xa hoi. ((dieu vu) or (hieu su)) cham quoc tuan ((anh te) OR (anh tu)) cua triet*".