Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thanh lap » thanh san, phan lap, thanh hai
van thanh » ban thanh, van tuan
vu khach » vu khanh, vu khac, vay khach
cham duc » pham duc, cham soc, pham duy
lap cua » lai cua, tap cua, lam cua
duc van » duc va, duc tan, duc manh
va cham » va chat, va tham
su sach » so sach, vu sach
hieu va » lieu va, hieu qua
nang ma » tang ma, sang ma, nang cao
nang xa » nang x, lang xa, mang xa

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su sach) or (vu khach)) ky ((nang xa) OR (nang ma)) hoi. hieu va cham duc van thanh lap cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (vu khach)) ky ((nang xa) OR (nang ma)) hoi. hieu va cham duc van thanh lap cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (vu khach)) ky ((nang xa) OR (nang ma)) hoi. hieu va cham duc van thanh lap cua triet".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (vu khach)) ky ((nang xa) OR (nang ma)) hoi. hieu va cham duc van thanh lap cua triet*.