Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
hanh tai » thanh tai, hang tai, han tai
hanh lai » hanh lam, thanh lap, thanh loi
hieu ve » hieu va, hieu van
thu sac » thu sach, thu san, thu xac
danh xa » danh ca, dinh xa, dan xa
canh xa » canh va, canh tac, canh tay
sac ky » cac ky, sai ky
cac tu » cac thu, cach tu, cac du
tu van » tu va
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: thu sac ky ((danh xa) or (canh xa)) hoi. hieu ve cac tu van ((hanh lai) OR (hanh tai)) su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sac ky ((danh xa) OR (canh xa)) hoi. hieu ve cac tu van ((hanh lai) OR (hanh tai)) su triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sac ky ((danh xa) or (canh xa)) hoi. hieu ve cac tu van ((hanh lai) OR (hanh tai)) su triet".
• Adding a wildcard symbol may retrieve word variants: thu sac ky ((danh xa) or (canh xa)) hoi. hieu ve cac tu van ((hanh lai) OR (hanh tai)) su triet*.