Perhaps you should try some spelling variations:
thuat lanh » thuat lap, thuat san
thanh doi » thanh loi, thanh moi, thanh do
su triet » su tien, ve triet
su viet » so viet
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
hieu ve » hieu va, hieu van
cac duc » cac du, cao duc, cac dac
duc gia » quoc gia
ve cac » va cac, vien cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((vu bach) or (thuat lanh)) ky lang xa hoi. hieu ve cac duc gia thanh doi ((su triet) or (su viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu bach) OR (thuat lanh)) ky lang xa hoi. hieu ve cac duc gia thanh doi ((su triet) OR (su viet)).
• Adding a wildcard symbol may retrieve word variants: ((vu bach) or (thuat lanh)) ky lang xa hoi. hieu ve cac duc gia thanh doi ((su triet) or (su viet))*.