Perhaps you should try some spelling variations:
khap thong » phap thong, khau thong, khac thuong
cach thuc » anh thuc, cac thu
thuc khap » thuc khac, thuoc phap, thuc pham
khoan pho » khoan nhoi, khoan phai, khoan hoi
pho thong » he thong
thieu te » thieu ve, thieu tai, thiet ke
sach tai » sach bai, sach tham, sach dao
tu sach » thu sach, te sach, tu cach
te cach » ve cach, te sach, tu cach
su sach » so sach, vu sach
tai tue » tri tue, tai tu, tai tieu
tue cac » tu cac, tuc cac, te cac

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 thieu te cach thuc khap thong ) or ( su sach tai tue cac khoan pho thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu sach thieu te cach thuc khap thong ) OR ( su sach tai tue cac khoan pho thong )).
• Adding a wildcard symbol may retrieve word variants: (( tu sach thieu te cach thuc khap thong ) or ( su sach tai tue cac khoan pho thong ))*.