Perhaps you should try some spelling variations:
dat tren » dat trong, dua tren
cau tren » cu tren, dau tren, ca tren
bang cau » hang cau, bang cac, nang cao
sach tu » sach thu, cach tu, sach ty
va tinh » may tinh
vu sach » vu bach, su sach, vu khach
hieu ve » hieu va, hieu van
tu bang » thu bang, tu ban, te bang
ve cam » ve cham, ve cac, va cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach tu bang cau hoi. hieu ve cam xuc ((gia thanh) or (va tinh)) vi ((cau tren) or (dat tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach tu bang cau hoi. hieu ve cam xuc ((gia thanh) OR (va tinh)) vi ((cau tren) OR (dat tren)).
• Adding a wildcard symbol may retrieve word variants: vu sach tu bang cau hoi. hieu ve cam xuc ((gia thanh) or (va tinh)) vi ((cau tren) or (dat tren))*.