Perhaps you should try some spelling variations:
toan thanh » tran thanh, hoan thanh, toan thang
tan thanh » tran thanh, tang thanh, ban thanh
ky lang » ky dang, ky tang, tay lang
hieu ve » hieu va, hieu van
cac dac » cac dan, cac dai, cac bac
hai cua » thai cua, dai cua, hoi cua
su sac » su sach, su cac, su xac
ve cac » va cac, vien cac
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sac ((ky lang) OR (ky nang)) xa hoi. hieu ve cac dac ((tan thanh) or (toan thanh)) hai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ((ky lang) OR (ky nang)) xa hoi. hieu ve cac dac ((tan thanh) OR (toan thanh)) hai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sac ((ky lang) OR (ky nang)) xa hoi. hieu ve cac dac ((tan thanh) or (toan thanh)) hai cua te".
• Adding a wildcard symbol may retrieve word variants: su sac ((ky lang) OR (ky nang)) xa hoi. hieu ve cac dac ((tan thanh) or (toan thanh)) hai cua te*.