Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh va, hanh tai
sach ky » sach y, sach ty, sach kem
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
vai cua » dai cua, hai cua, lai cua
sac ky » cac ky, sai ky
ve cao » va cao, ve bao, ve cac
luc va » tuc va, loc va
cua tu » cua tuc, cua su, cua cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat ((sach ky) or (sac ky)) nang xa hoi. hieu ve cao ((luc va) OR (duc va)) hanh vai cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat ((sach ky) OR (sac ky)) nang xa hoi. hieu ve cao ((luc va) OR (duc va)) hanh vai cua tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat ((sach ky) or (sac ky)) nang xa hoi. hieu ve cao ((luc va) OR (duc va)) hanh vai cua tu".
• Adding a wildcard symbol may retrieve word variants: thuat ((sach ky) or (sac ky)) nang xa hoi. hieu ve cao ((luc va) OR (duc va)) hanh vai cua tu*.