Perhaps you should try some spelling variations:
thuat sac » thuat sach, thuat san, thuat tac
hanh tai » thanh tai, hang tai, han tai
dua tren » dung tren
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
sac ky » cac ky, sai ky
ve cao » va cao, ve bao, ve 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: thuat sac ky nang xa hoi. hieu ve cao ((luc canh) or (suc manh)) hanh tai ((dua tren) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sac ky nang xa hoi. hieu ve cao ((luc canh) OR (suc manh)) hanh tai ((dua tren) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: thuat sac ky nang xa hoi. hieu ve cao ((luc canh) or (suc manh)) hanh tai ((dua tren) or (cua te))*.