Perhaps you should try some spelling variations:
thanh toan » thanh hoa, thanh san, tinh toan
cua triet » cua viet, su triet, va triet
thanh tai » thanh hai, doanh tai, thanh san
lam duc » lam duoc, pham duc, nam duoc
duc gia » quoc gia
sach ky » sach y, sach ty, sach kem
hieu va » lieu va, hieu qua
nang ma » tang ma, sang ma, nang cao
ma hoi » mai hoi, xa hoi, ma hoa
sac ky » cac ky, sai ky
va lam » van lam, va lap

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 ky) OR (sac ky)) nang ma hoi. hieu va lam duc gia ((thanh tai) or (thanh toan)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach ky) OR (sac ky)) nang ma hoi. hieu va lam duc gia ((thanh tai) OR (thanh toan)) cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su ((sach ky) OR (sac ky)) nang ma hoi. hieu va lam duc gia ((thanh tai) or (thanh toan)) cua triet".
• Adding a wildcard symbol may retrieve word variants: su ((sach ky) OR (sac ky)) nang ma hoi. hieu va lam duc gia ((thanh tai) or (thanh toan)) cua triet*.