Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
hieu kem » hieu ky, hieu ve
danh sai » dung sai, danh bat, danh dau
sai cua » dai cua, hai cua, lai cua
va danh » va dinh, va dan, va hanh
hau loc » huu loc, phau hoc
cau loc » cau hoc, cau luc, cau long
nang xa » nang x, lang xa, nang ma
te sach » toc sach
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: ((thu sach) or (te sach)) ky nang xa hoi. hieu kem ((cau loc) OR (hau loc)) va danh sai cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (te sach)) ky nang xa hoi. hieu kem ((cau loc) OR (hau loc)) va danh sai cua tu*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu sach) or (te sach)) ky nang xa hoi. hieu kem ((cau loc) OR (hau loc)) va danh sai cua tu*".