Perhaps you should try some spelling variations:
hang cau » hang dau, hang ca, nhung cau
thanh va » thanh van, hanh va, thanh ha
va thanh » gia thanh, ban thanh, va tinh
luy tre » luyen tre
ky hang » ky nang, ly hang, ky dang
ve cham » va cham, ve chat, vu cham
te sac » te sach, te cac, te san
sac ky » cac ky, sai ky
ve cam » ve cac, va cam, ve cai

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sac ky hang cau hoi. hieu ((ve cam) OR (ve cham)) duc va thanh va ((luu tru) or (luy tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky hang cau hoi. hieu ((ve cam) OR (ve cham)) duc va thanh va ((luu tru) OR (luy tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ky hang cau hoi. hieu ((ve cam) OR (ve cham)) duc va thanh va ((luu tru) or (luy tre))".
• Adding a wildcard symbol may retrieve word variants: te sac ky hang cau hoi. hieu ((ve cam) OR (ve cham)) duc va thanh va ((luu tru) or (luy tre))*.