Perhaps you should try some spelling variations:
cau theo » cau thi, cau tao
hang tai » hang va, dung tai
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
hieu ve » hieu va, hieu van
ve cam » ve cham, ve cac, va cam
tuc va » thuc va, truc va, tuc xa

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ty nang x ho. hieu ve cam ((tuc va) or (duc va)) ((hanh vi) or (hang tai)) cau theo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang x ho. hieu ve cam ((tuc va) OR (duc va)) ((hanh vi) OR (hang tai)) cau theo.
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang x ho. hieu ve cam ((tuc va) or (duc va)) ((hanh vi) or (hang tai)) cau theo*.